Cannot seem to figure why my app is force closing

Cannot seem to figure why my app is force closing - android

So, when I press the Increment or Decrement button on my device, the app force closes. I tried using debugger but can't seem to figure out the problem. It is basically a single screen app that shows Order summary.
Here is the XML Code:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin">
<TextView
android:id="#+id/name_field"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="QUANTITY!" />
<CheckBox
android:id="#+id/whipped_cream_checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="24dp"
android:text="Whipped Cream"
android:textSize="16sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:onClick="decrement"
android:text="-" />
<TextView
android:id="#+id/quantity_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="8dp"
android:paddingRight="8dp"
android:text="0"
android:textColor="#android:color/black"
android:textSize="16sp" />
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:onClick="increment"
android:text="+" />
</LinearLayout>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:onClick="submitOrder"
android:text="Order" />
<TextView
android:id="#+id/order_summary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="16dp"/>
</LinearLayout>
</ScrollView>
The JAVA code:
package com.example.android.timeforacoffee;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
int quantity=0;
String priceMessage="Name: Moksh \n" + "Your total is ₹" +quantity;
public void displayQuanity(int quantity) {
TextView quantity_value=(TextView) findViewById(R.id.quantity_text_view);
quantity_value.setText(quantity);
}
/**
*This method is called when the - button is pressed.
*/
public void decrement(View view) {
displayQuanity(quantity - 1);
}
/**
*
* This method is called when the + button is clicked.
*/
public void increment(View view) {
displayQuanity(quantity + 1);
}
public void displayMessage(String priceMessage) {
TextView order_summary=(TextView) findViewById(R.id.order_summary);
order_summary.setText(priceMessage);
}
/**
* This method is called when the Order button is clicked.
*/
public void submitOrder(View view) {
displayMessage(priceMessage);
}
}

I think the issue is in the below line of code
quantity_value.setText(quantity);
Note that when you pass any integer to setText function android considers the integer as an reference to a string reource and searches for that string in the reource file, if that string is not found your app will crash with android.content.res.Resources$NotFoundException.
You can simply fix this issue by explicitly parsing the integer as string as below
quantity_value.setText(String.valueOf(quantity));

Related

can't find the solution?? it is showing cannot resolve R

It is showing cannot resovle R.
how i can solve this problem?????
if you need xml file to solve problem ,ask me in comment
Please help
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Here's the java code:
package com.example.android.justjava;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.TextView;
import java.text.NumberFormat;
/**
* This app displays an order form to order coffee.
*/
public class MainActivity extends AppCompatActivity {
int quantity = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
/**
* This method is called when the order button is clicked.
*/
public void submitOrder(View view) {
int price= quantity*16;
String priceMessage="total:" + (quantity*16) ;
priceMessage=priceMessage +"\nThank You!";
displayMessage(priceMessage);
}
/**
* This method displays the given text on the screen.
*/
private void displayMessage(String message) {
TextView priceTextView = (TextView) findViewById(R.id.price_text_view);
priceTextView.setText(message);
}
public void increase(View view) {
quantity = quantity + 1;
displayPrice(quantity*16);
display(quantity);
}
public void decrease(View view) {
quantity = quantity - 1;
displayPrice(quantity*16);
display(quantity);
}
/**
* This method displays the given quantity value on the screen.
*/
private void display(int number) {
TextView quantityTextView = (TextView) findViewById(R.id.quantity_text_view);
quantityTextView.setText("" + number);
}
/**
* This method displays the given price on the screen.
*/
private void displayPrice(int number) {
TextView priceTextView = (TextView) findViewById(R.id.price_text_view);
priceTextView.setText(NumberFormat.getCurrencyInstance().format(number);
}
here's the xml file:::
................................................................................................................................................................................................................................................
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/w"
android:orientation="vertical"
>
<TextView
android:id="#+id/txt1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:text="Welcome to Ordering Menu"
android:textColor="#android:color/white"
android:textSize="25sp"
app:fontFamily="#font/crafty_girls" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_marginTop="20dp"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginLeft="20dp"
android:src="#drawable/cappo"/>
<Button
android:id="#+id/btn2"
android:layout_width="48dp"
android:layout_height="48dp"
android:textSize="30sp"
android:layout_marginLeft="50dp"
android:layout_marginTop="20dp"
android:onClick="increase"
android:text="+"
android:textColor="#android:color/black"
android:background="#android:color/white" />
<TextView
android:id="#+id/quantity_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="20dp"
android:text="0"
android:textSize="20sp"
android:textColor="#android:color/white" />
<Button
android:id="#+id/btn3"
android:layout_width="50dp"
android:textColor="#android:color/black"
android:background="#android:color/white"
android:layout_height="50dp"
android:textBold="true"
android:layout_marginLeft="10dp"
android:layout_marginTop="20dp"
android:onClick="decrease"
android:textSize="30sp"
android:text="-" />
</LinearLayout>
<TextView
android:id="#+id/kk"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="170dp"
android:text="Price" />
<TextView
android:id="#+id/price_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="10dp"
android:text="$0"
android:textColor="#000000" />
<Button
android:id="#+id/btn1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="15dp"
android:onClick="submitOrder"
android:text="ORDER" />
</LinearLayout>
</android.support.constraint.ConstraintLayout>

This may not be the case for you but worth a shot, sometimes Android studio is glitchy and needs to be closed/ reopened. Also you could try, Build > Clean Project.

Try from android studio menu File -> Invalidate Caches and Restart -> Invalidate and Restart

i'm new in this type of developing ,so can i know where can i find this import list
So i can suggest you to check few things.
Make sure you have installed your targeted build tools. Eg: API 28
Check the package name in your AndroidManifest.xml file. You may have deleted the package name from the manifest file mistakenly.
If none of the above in your case, try to import com.example.android.justjava.R

How to pass data from bottom sheet to a fragment in android?

I am trying to pass values from a bottom sheet which contains some TextViews to a fragment.
My fragment contains an EditText field and a Floating action button.When the user clicks on the floating action button, the bottom sheet shows up which has a number of TextViews, when the user clicks on any of the textViews on the bottom sheet, the value or the string of that TextView should be displayed in the editText field of the fragment and the bottom sheet should be dismissed.
I have tried implementing the onClickListener inside the setOnShowListener method but it doesn't seem to work.
Here is my code:
Fragment_TextPropert1_EditText.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.sumitroy.TextProperty1_EditText"
>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:cardCornerRadius="15dp"
android:padding="15dp"
android:layout_below="#+id/view"
android:layout_marginTop="10dp"
app:cardUseCompatPadding="true"
android:id="#+id/view2">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textMultiLine"
android:hint="Enter Your Comments Here.."
android:id="#+id/userText"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</android.support.v7.widget.CardView>
<ImageButton
android:layout_width="65dp"
android:layout_height="65dp"
android:id="#+id/example_Ads"
android:background="#drawable/oval"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_marginBottom="20dp"
android:layout_marginRight="15dp"
android:src="#drawable/double_plus"
/>
</RelativeLayout>
TextProperty1_bottomsheet.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<RelativeLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior">
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:cardCornerRadius="15dp"
android:padding="15dp"
android:layout_marginTop="15dp"
app:cardUseCompatPadding="true"
android:id="#+id/view1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Comment1"
android:id="#+id/example_Ad1"
android:padding="10dp"
android:textStyle="bold"
android:textSize="14sp"
android:layout_below="#+id/view"
android:layout_alignParentStart="true" />
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:cardCornerRadius="15dp"
android:padding="15dp"
android:layout_marginTop="10dp"
app:cardUseCompatPadding="true"
android:layout_below="#+id/view1"
android:id="#+id/view2">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Comment 2"
android:id="#+id/example_Ad2"
android:padding="10dp"
android:textStyle="bold"
android:textSize="14sp"
android:layout_below="#+id/view"
/>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:cardCornerRadius="15dp"
android:padding="15dp"
android:layout_marginTop="15dp"
app:cardUseCompatPadding="true"
android:id="#+id/view3"
android:layout_below="#+id/view2">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Comment 3 "
android:id="#+id/example_Ad3"
android:padding="10dp"
android:textStyle="bold"
android:textSize="14sp"
android:layout_below="#+id/view"
/>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:cardCornerRadius="15dp"
android:padding="15dp"
android:layout_marginTop="15dp"
app:cardUseCompatPadding="true"
android:id="#+id/view4"
android:layout_below="#+id/view3">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Comment 4 "
android:id="#+id/example_Ad4"
android:padding="10dp"
android:textStyle="bold"
android:textSize="14sp"
android:layout_below="#+id/view"
/>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:cardCornerRadius="15dp"
android:padding="15dp"
android:layout_marginTop="15dp"
app:cardUseCompatPadding="true"
android:id="#+id/view5"
android:layout_below="#+id/view4">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Comment 5 "
android:id="#+id/example_Ad5"
android:padding="10dp"
android:textStyle="bold"
android:textSize="14sp"
android:layout_below="#+id/view"
/>
</android.support.v7.widget.CardView>
</RelativeLayout>
</ScrollView>
TextProperty1_EditText.java
import android.app.Activity;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.BottomSheetBehavior;
import android.support.design.widget.BottomSheetDialog;
import android.support.v4.app.Fragment;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
/**
* A simple {#link Fragment} subclass.
*/
public class TextProperty1_EditText extends Fragment {
View bottomSheetView;
EditText editText1;
TextView t1;
BottomSheetDialog bottomSheetDialog;
BottomSheetBehavior bottomSheetBehavior;
ImageButton floatButton;
RelativeLayout backgroundLayout;
public TextProperty1_EditText() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
final View rootview= inflater.inflate(R.layout.fragment_text_property1__edit_text, container, false);
editText1=(EditText) rootview.findViewById(R.id.userText);
floatButton=(ImageButton)rootview.findViewById(R.id.example_Ads);
floatButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//Toast.makeText(v.getContext(),"Floating Button Works",Toast.LENGTH_SHORT).show();
bottomSheetView=getActivity().getLayoutInflater().inflate(R.layout.textproperty1_bottomsheet,null);
bottomSheetDialog=new BottomSheetDialog(rootview.getContext());
bottomSheetDialog.setContentView(bottomSheetView);
bottomSheetBehavior=BottomSheetBehavior.from((View) bottomSheetView.getParent());
bottomSheetDialog.show();
bottomSheetDialog.setOnShowListener(new DialogInterface.OnShowListener() {
#Override
public void onShow(DialogInterface dialog) {
t1=(TextView)bottomSheetView.findViewById(R.id.example_Ad1);
t1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String take1=t1.getText().toString();
//Toast.makeText(bottomSheetView.getContext(),"Floating Button Works",Toast.LENGTH_SHORT).show();
editText1.setText(take1);
bottomSheetDialog.dismiss();
}
});
}
});
bottomSheetDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
#Override
public void onDismiss(DialogInterface dialog) {
}
});
bottomSheetDialog.setOnKeyListener(new DialogInterface.OnKeyListener() {
#Override
public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
//Toast.makeText(bottomSheetView.getContext(),"Floating Button Works",Toast.LENGTH_SHORT).show();
return false;
}
});
}
});
return rootview;
}
}

As a simple solution you may use LocalBroadcastManager.
public static final String SOME_INTENT_FILTER_NAME = "SOME_INTENT_FILTER_NAME";
In your fragment:
private BroadcastReceiver someBroadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
//TODO extract extras from intent
}
};
#Override
public void onResume() {
super.onResume();
LocalBroadcastManager.getInstance(getContext()).registerReceiver(someBroadcastReceiver,
new IntentFilter(SOME_INTENT_FILTER_NAME));
}
#Override
public void onPause() {
LocalBroadcastManager.getInstance(getContext()).unregisterReceiver(someBroadcastReceiver);
super.onPause();
}
In your bottomsheet:
Intent someIntent = new Intent(SOME_INTENT_FILTER_NAME);
//TODO put extras to your intent
LocalBroadcastManager.getInstance(context).sendBroadcast(someIntent);

Implementing formulas into each value in the spinner which will change the result everytime the user change selected value

I am creating a diet app for myself and I do not know how to transfer result from one calculation which was done in a different activity and use it in another one.
To make things more complicated, I want my spinner in MoreLooseWeightDetails.class to have a list of different diet types which have different fat, proteins and carb ratio. Every time the user choose different type it should automatically change the ratio.
This is where the calculation is being done and has to be trnasfered to MoreLooseWeightDetails.class
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
public class LooseWeight extends AppCompatActivity {
TextView TotalCal;
EditText numb2;
Spinner ActLvl;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_loose_weight);
numb2 = (EditText) findViewById(R.id.value1);
ActLvl = (Spinner) findViewById(R.id.value2);
TotalCal = (TextView)findViewById(R.id.resultDisplay);
final Spinner ActLvl = (Spinner)findViewById(R.id.value2);
ArrayAdapter<String> myAdapter = new ArrayAdapter<>(LooseWeight.this, android.R.layout.simple_expandable_list_item_1,getResources().getStringArray(R.array.lvl));
myAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
ActLvl.setAdapter(myAdapter);
Button calcBtn = (Button)findViewById(R.id.result);
calcBtn.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick (View view) {
float numb3 = Float.parseFloat(numb2.getText().toString());
float a = numb3 * 24;
float b = a * Float.parseFloat(ActLvl.getSelectedItem().toString());
float c = b - 500;
TotalCal.setText(Float.toString(c));
}
});
Button extra = (Button)findViewById(R.id.advance);
extra.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Intent intent = new Intent(getApplicationContext(),MoreLooseWeightDetails.class);
startActivity(intent);
}
});
}
}
Here is the MoreLooseWeightDetails.class
package com.fitup.fit_up;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class MoreLooseWeightDetails extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_more_loose_weight_details);
}
}
Here is the MoreLooseWeightDetails.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_more_loose_weight_details"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.fitup.fit_up.MoreLooseWeightDetails">
<TextView
android:text="TextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:id="#+id/Title3"
tools:text="More"
android:textSize="36sp" />
<TextView
android:text="Select Type of Diet"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/Title3"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="19dp"
android:id="#+id/Info3"
android:textSize="30sp" />
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/Info3"
android:layout_centerHorizontal="true"
android:layout_marginTop="13dp"
android:id="#+id/spinner" />
<TextView
android:text="You Should Eat :"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:id="#+id/Info4"
android:textSize="30sp"
android:layout_below="#+id/spinner"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:text="Protein (grams):"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/unit1"
android:textSize="24sp"
android:layout_below="#+id/Info4"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="78dp" />
<TextView
android:text="Fat (grams):"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/unit3"
android:textSize="24sp"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:text=""
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/unit3"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:id="#+id/result1"
android:textSize="30sp"
android:textAlignment="center"
android:layout_alignLeft="#+id/result2"
android:layout_alignStart="#+id/result2" />
<TextView
android:text=""
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/unit2"
android:id="#+id/result2"
android:textSize="30sp"
android:textAlignment="center"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignLeft="#+id/result3"
android:layout_alignStart="#+id/result3" />
<TextView
android:text=""
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/unit2"
android:id="#+id/result3"
android:textSize="30sp"
android:textAlignment="center"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_toRightOf="#+id/unit2"
android:layout_toEndOf="#+id/unit2" />
<TextView
android:text="Carbohydrates (grams):"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="43dp"
android:id="#+id/unit2"
android:textSize="24sp"
android:layout_below="#+id/unit1"
android:layout_alignRight="#+id/unit1"
android:layout_alignEnd="#+id/unit1" />
</RelativeLayout>

AppCompat Activity doesn't allow import Android.view and there is no getId for ViewCompat

Am unable to import Android.view when creating methods for changeColor() in my main activity. Instead it ask me to import ViewCompat and there isn't a getId() in the ViewCompat.
changeColor is an onclick method in my main xml.
Kindly need your advice to get the Resource Id of my radio button to change my text color.
My code is as enclosed below.
package com.example.rigmiklos.yt30sharedpreference;
import android.graphics.Color;
import android.support.v4.view.ViewCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.TypedValue;
import android.widget.EditText;
import android.widget.SeekBar;
public class MainActivity extends AppCompatActivity {
EditText message;
SeekBar seekBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
message = (EditText) findViewById(R.id.message);
seekBar = (SeekBar) findViewById(R.id.seekbar);
seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
message.setTextSize(TypedValue.COMPLEX_UNIT_PX, progress);
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
}
public void changeColor(View view)
{
switch(view.getId())
{
case R.id.id_red_colour:
message.setTextColor(Color.parseColor("&FC0116"));
break;
case R.id.id_blue_colour:
message.setTextColor(Color.parseColor("&0810F5"));
break;
case R.id.id_green_colour:
message.setTextColor(Color.parseColor("&03FF20"));
break;
}
}
}
XML code
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:background="#000000"
tools:context="com.example.rigmiklos.yt30sharedpreference.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Enter Your Message"
android:background="#FFFFFF"
android:id="#+id/textView3" />
<EditText
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="#+id/message"
android:background="#FFFFFF"
android:layout_below="#+id/textView3" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Adjust Font Size"
android:layout_marginTop="22dp"
android:layout_below="#+id/message"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:background="#FFFFFF"
android:id="#+id/textView" />
<SeekBar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/seekbar"
android:background="#FFFFFF"
android:layout_below="#+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Select Font Color"
android:background="#FFFFFF"
android:layout_below="#+id/seekbar"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginTop="22dp"
android:id="#+id/textView2" />
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FFFFFF"
android:layout_below="#+id/textView2"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:id="#+id/radioGroup">
<RadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Red"
android:id="#+id/id_red_colour"
android:onClick="changeColor"/>
<RadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Blue"
android:id="#+id/id_blue_colour"
android:onClick="changeColor"/>
<RadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Green"
android:id="#+id/id_green_colour"
android:onClick="changeColor"/>
</RadioGroup>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Save Setting"
android:background="#FFFFFF"
android:layout_alignParentBottom="true"
android:layout_alignRight="#+id/textView3"
android:layout_alignEnd="#+id/textView3" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Clear Setting"
android:layout_alignParentBottom="true"
android:layout_alignRight="#+id/radioGroup"
android:layout_alignEnd="#+id/radioGroup"
android:layout_marginRight="46dp"
android:layout_marginEnd="46dp"
android:id="#+id/button" />
</RelativeLayout>

i import Android.view.View to troubleshoot it. Still if anyone got other alternate answer or view, kindly share here.

How to place 2 buttons at the same position in my layout

I have My Table row like below in my xml layout:
<TableRow
android:layout_marginTop="10dp"
>
<SeekBar
android:id="#+id/seekBar1"
android:layout_width="256dp"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/titlename"
android:layout_="#+id/playbtn"
android:layout_marginTop="4dp"
/>
<Button
android:id="#+id/playbtn"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_alignParentBottom="true"
android:background="#drawable/play"
android:layout_marginBottom="3dp"/>
<Button
android:id="#+id/pausebtn"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_toTopOf="#+id/playbtn"
android:layout_alignParentBottom="true"
android:background="#drawable/pause"
android:layout_marginBottom="3dp"/>
</TableRow>
and my output is as below,
my requirement is to show play pause buttons at the same position in my layout?
Could any one help?

Use FrameLayout and put one button over another
Like this
<FrameLayout ... >
<Button
android:id="#+id/playbtn"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="#drawable/play"/>
<Button
android:id="#+id/pausebtn"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="#drawable/pause"/>
</FrameLayout>
This will put Pause button over Play Button. Make the necessary button visible and invisible according to your need

Try using this layout. Use combination of LinearLayout and FrameLayout to achieve the desired result.
<TableRow
android:layout_marginTop="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<SeekBar
android:id="#+id/seekBar1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weight="1"
android:layout_alignLeft="#+id/titlename"
android:layout_="#+id/playbtn"
android:layout_marginTop="4dp"
/>
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<Button
android:id="#+id/playbtn"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="#drawable/play"/>
<Button
android:id="#+id/pausebtn"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="#drawable/pause"/>
</FrameLayout>
</LinearLayout>
</TableRow>

once Try this:
<TableRow
android:id="#+id/tableRow1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1" >
<SeekBar
android:id="#+id/seekBar1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".8" />
<Button
android:id="#+id/play"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".2"
/>
</TableRow>
Main Activity
private boolean playing = false;
Button play;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
play=(Button) findViewById(R.id.play);
play.setBackgroundResource(R.drawable.pause);
play.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
if(playing){
playing = false;
play.setBackgroundResource(R.drawable.pause);
}
else {
playing = true;
play.setBackgroundResource(R.drawable.play);
}
}
});
}

Why can't you try merge?
Have a glance of this.
http://android-developers.blogspot.in/2009/03/android-layout-tricks-3-optimize-by.html

You don't need to create two buttons for it. You can do it with single. I have created a sample program. I find this to be a cleaner approach.
Layout for MainActivity
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center">
<Button
android:id="#+id/buttonPlayPause"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
Here is MainActivity
package in.live.homam.imagebuttonexample;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
private Button buttonPlayPause;
private static final int resourceIdPlay = R.drawable.play;
private static final int resourceIdPause = R.drawable.pause;
private int resourceIdButton = resourceIdPlay;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
buttonPlayPause = (Button) findViewById(R.id.buttonPlayPause);
buttonPlayPause.setBackgroundResource(resourceIdButton);
buttonPlayPause.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(resourceIdButton == resourceIdPlay) {
resourceIdButton = resourceIdPause;
Log.d("Tag", "Playing");
}
else {
resourceIdButton = resourceIdPlay;
Log.d("Tag", "Paused");
}
buttonPlayPause.setBackgroundResource(resourceIdButton);
}
});
}
}

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How to place 2 buttons at the same position in my layout

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