Develop Reference

Show dynamic edittext above the keyboard in android

I have an android screen and I need to create an edit text when some button is clicked, the edit text is not shown in the screen by default, I want to show it directly above the keyboard like the following screen shot. Is there are any way to do that?
enter image description here

I think this will help you
AndroidManifest.xml
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme"
android:usesCleartextTraffic="true"
tools:ignore="GoogleAppIndexingWarning">
<activity
android:name=".MainActivity"
android:windowSoftInputMode="adjustPan">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:id="#+id/relativeLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<androidx.appcompat.widget.AppCompatButton
android:id="#+id/btnOpen"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Open" />
</RelativeLayout>
MainActivity.Java
public class MainActivity extends AppCompatActivity {
AppCompatButton btnOpen;
RelativeLayout relativeLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnOpen = findViewById(R.id.btnOpen);
relativeLayout = findViewById(R.id.relativeLayout);
btnOpen.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
addEditText();
}
});
}
private void addEditText() {
// add edittext
EditText et = new EditText(this);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
lp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
et.setLayoutParams(lp);
et.setHint("Text");
relativeLayout.addView(et);
}
}

Button wont start another activitie

my button with the id radio, to start second activity, isnt working and my app keeps crashing. The second button however starts another activity wich is empty for the moment. can somebody please tell me what did i miss, so my app stops crashing when i press the button.
my first activity xml
<?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="com.example.mitja.radiohead.PrvaStran">
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayou 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="com.example.mitja.radiohead.PrvaStran">
<LinearLayout
android:layout_width="368dp"
android:layout_height="0dp"
android:orientation="vertical"
android:paddingLeft="16dp"
android:paddingRight="16dp"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="49dp"
android:weightSum="1">
<ImageView
android:id="#+id/slika"
android:layout_width="match_parent"
android:layout_height="218dp"
android:layout_weight="0.16"
android:src="#drawable/radio"
android:layout_marginLeft="1dp"
android:layout_marginRight="2dp"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="16dp" />
<Button
android:id="#+id/radio"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_weight="0.50"
android:text="radio"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="323dp" />
<Button
android:id="#+id/predvajalnik"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:text="predvajalnik"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="371dp" />
</LinearLayout>
java code of the first activity
public class PrvaStran extends AppCompatActivity {
private static Button btn1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_prva_stran);
onClickButton();
onClickButton2();
}
public void onClickButton()
{
btn1 = (Button) findViewById(R.id.radio);
btn1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent openMainAct = new Intent(PrvaStran.this, Radio.class);
startActivity(openMainAct);
}
});
}
public void onClickButton2()
{
btn1 = (Button) findViewById(R.id.predvajalnik);
btn1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent("com.example.mitja.radiohead.Predvajalnik");
startActivity(intent);
}
});
}
}
and the android manifestxml code.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mitja.radiohead">
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".PrvaStran">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Radio"
android:label="#string/app_name">
<intent-filter>
<action android:name="com.example.mitja.radiohead.Radio" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name=".Predvajalnik">
<intent-filter>
<action android:name="com.example.mitja.radiohead.Predvajalnik" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
what am i missing here? the second activity is made from a tutorial i saw on youtube to create a listview with images and texts. I got the code from this site now im trying to use it in this app for practice. i havent had any experiance with android studio before so im asking for a little guide.

In your code you are referencing same button to two different ids
private Button btn1;
btn1 = (Button) findViewById(R.id.radio);
btn1 = (Button) findViewById(R.id.predvajalnik);
That is why app is getting crashed.
declare two different buttons and then refer them to respected ids.
private Button btn1;
private Button btn2;
btn1 = (Button) findViewById(R.id.radio);
btn2 = (Button) findViewById(R.id.predvajalnik);

You don't need to write the buttons as fields, but you do need to actually set both buttons listeners
findViewById(R.id.radio).setOnClickListener(
...
);
findViewById(R.id.predvajalnik).setOnClickListener(
...
);

My application is stopped when executed. Error in my manifest?

My application is stopped when executed. I'm starting to program for android, just put a background and buttons, but it seems that I have problems creating the manifest. Before this project had many problems creating a new eclipse I put an activity together with the library and I started appcontainer_v7 errenter code hereored. To use the SDK 19 I decided to do everything manually.
CLASS:
package com.progra.cubebreaker;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class Menu extends Activity implements OnClickListener{
Button Jugar, Puntuaciones, Instrucciones;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_menu);
Jugar.findViewById(R.id.btJugar);
Puntuaciones.findViewById(R.id.btInstrucciones);
Instrucciones.findViewById(R.id.btInstrucciones);
Jugar.setOnClickListener(this);
Puntuaciones.setOnClickListener(this);
Instrucciones.setOnClickListener(this);
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.btJugar:
break;
case R.id.btPuntuaciones:
Toast text = Toast.makeText(this, "Pendiente...", Toast.LENGTH_SHORT);
text.show();
break;
case R.id.btInstrucciones:
Toast text1 = Toast.makeText(this, "Pendiente...", Toast.LENGTH_SHORT);
text1.show();
break;
}
}
}
LAYOUT:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#drawable/fondo1" >
<Button
android:id="#+id/btInstrucciones"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignRight="#+id/btPuntuaciones"
android:layout_marginBottom="89dp"
android:text="#string/instrucciones"
android:textSize="40dp"
android:textStyle="italic|normal|bold" />
<Button
android:id="#+id/btPuntuaciones"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/btInstrucciones"
android:layout_centerHorizontal="true"
android:layout_marginBottom="60dp"
android:text="#string/puntuaciones"
android:textSize="40dp"
android:textStyle="italic|normal|bold" />
<Button
android:id="#+id/btJugar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/btPuntuaciones"
android:layout_centerHorizontal="true"
android:layout_marginBottom="66dp"
android:text="#string/jugar"
android:textColorHint="#android:color/background_dark"
android:textSize="40dp"
android:textStyle="italic|normal|bold" />
</RelativeLayout>
MANIFEST:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.progra.cubebreaker"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".Menu"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>

You are not mapping the layout objects to java class objects thats y ur application is crashing.
You need to map the java button by converting id of button or any other attribute to (Button) etc.
Modify your code :
Jugar = (Button) findViewById(R.id.btInstrucciones);
Puntuaciones= (Button) findViewById(R.id.btPuntuaciones);
Instrucciones = (Button) findViewById(R.id.btInstrucciones);
Hope that helps.

just replace this code,
Jugar.findViewById(R.id.btJugar);
Puntuaciones.findViewById(R.id.btInstrucciones);
Instrucciones.findViewById(R.id.btInstrucciones);
by
Jugar = (Button) findViewById(R.id.btJugar);
Puntuaciones = (Button) findViewById(R.id.btPuntuaciones);
Instrucciones = (Button) findViewById(R.id.btInstrucciones);

Your application is crashing as you are not initializing the widgets in your code.
Here is the error:
Jugar.findViewById(R.id.btJugar);
Puntuaciones.findViewById(R.id.btInstrucciones);
Instrucciones.findViewById(R.id.btInstrucciones);
Change it to:
Jugar = (Button) findViewById(R.id.btJugar);
Puntuaciones = (Button) findViewById(R.id.btPuntuaciones);
Instrucciones = (Button) findViewById(R.id.btInstrucciones);

FragmentActivity Buttons to switch between Fragments

All I want to do is a simple Button page switcher between the MainActivity and ArticleGroups pages. I will be implementing a paging class afterwards but I want to get the buttons working first.
Once I run the Application the app will crash and force close so I am certainly doing something wrong.
MainActivity.java
public class MainActivity extends FragmentActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button b = (Button)findViewById(R.id.articlebtn);
b.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick (View v) {
Intent i = new Intent(MainActivity.this, ArticleGroup.class);
startActivity(i);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
activity_main.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:layout_width="match_parent"
android:layout_height="match_parent" tools:context=".MainActivity">
<fragment
android:id="#+id/activitymain_fragment"
android:name="com.dharris.mindfulemployer_v4.MainActivity"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="#+id/articlebtn"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:background="#color/aqua"
android:onClick="onClick" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/articlebtn"
android:layout_alignBottom="#+id/articlebtn"
android:layout_toRightOf="#+id/articlebtn"
android:text="#string/hello_world" />
</RelativeLayout>
ArticleGroup.java
public class ArticleGroup extends FragmentActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.articlegroup);
Button b = (Button) findViewById(R.id.articlebtn);
b.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(ArticleGroup.this, MainActivity.class);
startActivity(i);
}
});
}
}
articlegroup.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<fragment
android:id="#+id/articlegroupfragment"
android:name="com.dharris.mindfulemployer_v4.ArticleGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="#+id/articlebtn"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:background="#color/aqua"
android:onClick="onClick" />
</RelativeLayout>
Manifest File
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.dharris.mindfulemployer_v4"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<!-- Activity Default -->
<activity
android:name="com.dharris.mindfulemployer_v4.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- Activity ArticleGroup -->
<activity
android:name=".ArticleGroup"
android:label="#string/app_name"
></activity>
</application>
</manifest>
If anyone can make sense as to why this is not working then I will be very appreciative.

You have
android:onClick="onClick" />
You need to have a method by name onClick in Activity which takes view as a param
You can remove this
Button b = (Button)findViewById(R.id.articlebtn);
b.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick (View v) {
Intent i = new Intent(MainActivity.this, ArticleGroup.class);
startActivity(i);
}
});
And have
public void onClick(View V)
{
// do something on button click
}

Delete this line from activity_main.xml and articlegroup.xml
android:onClick="onClick"

android app one page to another page not working

Here I done code for 5 buttons like Aboutus,development,carriers,services,contactus.
Here I clicked about us button that shows errors as unfortunately app closed.
Here is my code :
MainActivity.java
public class MainActivity extends Activity {
Button aboutus,development,service,carriers,contactus;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button aboutus=(Button) findViewById(R.id.aboutus);
aboutus.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(v.getContext(),aboutus.class);
startActivity(i);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
activity_main.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"
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=".MainActivity" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="#+id/aboutus"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="About us"
/>
<Button
android:id="#+id/services"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Services"
/>
<Button
android:id="#+id/development"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Development"
/>
<Button
android:id="#+id/carriers"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Carriers"
/>
<Button
android:id="#+id/contactus"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Contact Us"
/>
</LinearLayout>
</RelativeLayout>
aboutus.java
public class aboutus extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.aboutus);
}
}
aboutus.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="Aboutus Page"/>
</LinearLayout>
AndroidManifest.xml is this correct ?
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.globalinfosoft"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.globalinfosoft.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<Activity android:name= "aboutus"/>
</application>
</manifest>

MainActivity.java
package com.example.a;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
Button aboutus, development, service, carriers, contactus;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button aboutus = (Button) findViewById(R.id.aboutus);
aboutus.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
//Starting a new Intent
Intent nextScreen = new Intent(getApplicationContext(),aboutus.class);
startActivity(nextScreen);
}
});
}
}
Here is Androidmanifest.xml :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.a"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.a.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.a.aboutus"></activity>
</application>
</manifest>

Instead of v.getContext() use 'getApplicationContext()'.
Intent i = new Intent(getApplicationContext(),aboutus.class);
startActivity(i);

Try this ..
Button aboutus=(Button) findViewById(R.id.aboutus);
aboutus.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(getApplicationContext(),aboutus.class);
startActivity(i);
}
});

First, you should make sure that you have declared the aboutus acitivity in your AndroidManifest.xml file.
<Activity android:name= "aboutus"/>
Second, you can use
Intent i = new Intent(getApplicationContext(),aboutus.class);
or
Intent i = new Intent(MainActivity.this,aboutus.class);
instead of
Intent i = new Intent(v.getContext(),aboutus.class);

Intent i = new Intent(v.getContext(),aboutus.class);
startActivity(i);
instead of code use following code and instruction:
Intent i = new Intent(MainActivity.this,aboutus.class);
startActivity(i);
you have to declare the About us activity on AndroidManifest.xml like this
<Activity android:name= ".aboutus"/>