I'm writing a program that is supposed to draw a line in a canvas at the bottom of the screen below a button, etc. My layout shows up, but the line doesn't. Anyone know why my canvas doesn't show up?
Here is the code:
public class Vectors extends Activity{
VectorsView vectorsView;
LinearLayout l;
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.vectors);
vectorsView = new VectorsView(this);
l = (LinearLayout) findViewById(R.id.llCanvasV);
l.addView(vectorsView);
.......
}
public class VectorsView extends View{
public VectorsView(Context context) {
super(context);
}
#Override
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
super.onDraw(canvas);
Paint paint = new Paint();
paint.setColor(Color.WHITE);
canvas.drawLine(0, 0, 100, 100, paint);
vectorsView.draw(canvas);
vectorsView.setLayoutParams(new LayoutParams(25, 25));
}
}
Here is the xml:
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/background"
android:orientation="vertical">
<ImageView android:layout_height="wrap_content"
android:src="#drawable/vectors"
android:layout_width="wrap_content"
android:layout_gravity="center"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:adjustViewBounds="true">
</ImageView>
<LinearLayout android:layout_height="wrap_content"
android:layout_width="match_parent"
android:orientation="horizontal">
<Button android:text="Choose Program"
android:id="#+id/bChsProgV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginLeft="97dp"
android:adjustViewBounds="true">
</Button>
<ImageButton android:layout_height="wrap_content"
android:src="#drawable/help"
android:id="#+id/ibHelpV"
android:layout_width="wrap_content"
android:layout_marginLeft="65dp"
android:background="#null"
android:layout_marginTop="10dp">
</ImageButton>
</LinearLayout>
<LinearLayout android:id="#+id/llCanvasV"
android:layout_height="wrap_content"
android:layout_width="match_parent">
</LinearLayout>
</LinearLayout>
onMeasure method missing in VectorsView class. and also you can add VectorsView from Layout by keeping the complete package <package.VectorsView android:id= android:width= android:height= ></package.VectorsView>
Related
I'm trying to use SurfaceView and want to paint on it, use code:
public class TestPaint extends SurfaceView {
public TestPaint(Context context) {
super(context);
setWillNotDraw(false);
setBackgroundColor(color.white);
}
#Override
protected void onDraw(Canvas canvas) {
Paint p = new Paint();
p.setColor(color.black);
canvas.drawText("test", 10, 10, p);
}
}
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TestPaint p=new TestPaint(this);
p.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
LinearLayout rl=(LinearLayout) findViewById(R.id.rltMain);
rl.addView(p);
}
}
The TestPaint display black background only. I try Why do I get it?
Using paint class better then that you have use frame layout and set text view or whatever u want.
Check this,
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<SurfaceView
android:id="#+id/surfaceView1"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</SurfaceView>
</LinearLayout>
<TextView
android:id="#+id/test"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top|right"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp"
android:text="test"
android:background="#color/abc_search_url_text_normal"
android:textColor="#android:color/black"
android:textSize="20sp" />
</FrameLayout>
Firstly - sorry if you saw my other question which I deleted. My question was flawed. Here is a better version
If I have two views, how do I draw a (straight) line between them when one of them is touched? The line needs to be dynamic so it can follow the finger until it reaches the second view where it "locks on". So, when view1 is touched a straight line is drawn which then follows the finger until it reaches view2.
I created a LineView class that extends view, but I don't how to proceed. I read some tutorials but none show how to do this. I think I need to get the coordinates of both view, and then create a path which "updates" on MotionEvent. I can get the coordinates and the ids of the views I want to draw a line between, but the line that I try to draw between them either goes above it, or the line does not reach past the width and height of the view.
Any advice/code/clarity would be much appreciated!
Here is some code:
My layout. I want to draw a line between two views contained in theTableLayout.#
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/activity_game_relative_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TableLayout
android:layout_marginTop="35dp"
android:layout_marginBottom="35dp"
android:id="#+id/tableLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true" >
<TableRow
android:id="#+id/table_row_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dip" >
<com.example.view.DotView
android:id="#+id/game_dot_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp" />
<com.example.view.DotView
android:id="#+id/game_dot_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp" />
<com.example.view.DotView
android:id="#+id/game_dot_3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp" />
</TableRow>
<TableRow
android:id="#+id/table_row_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dip" >
<com.example.view.DotView
android:id="#+id/game_dot_7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp" />
<com.example.view.DotView
android:id="#+id/game_dot_8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp" />
<com.example.dotte.DotView
android:id="#+id/game_dot_9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp" />
</TableRow>
</TableLayout>
</RelativeLayout>
This is my LineView class. I use this to try and draw the actual line between the points.
public class LineView extends View {
Paint paint = new Paint();
float startingX, startingY, endingX, endingY;
public LineView(Context context) {
super(context);
// TODO Auto-generated constructor stub
paint.setColor(Color.BLACK);
paint.setStrokeWidth(10);
}
public void setPoints(float startX, float startY, float endX, float endY) {
startingX = startX;
startingY = startY;
endingX = endX;
endingY = endY;
invalidate();
}
#Override
public void onDraw(Canvas canvas) {
canvas.drawLine(startingX, startingY, endingX, endingY, paint);
}
}
And this is my Activity.
public class Game extends Activity {
DotView dv1, dv2, dv3, dv4, dv5, dv6, dv7;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game);
getWindow().getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LOW_PROFILE);
findDotIds();
RelativeLayout rl = (RelativeLayout) findViewById(R.id.activity_game_relative_layout);
LineView lv = new LineView(this);
lv.setPoints(dv1.getLeft(), dv1.getTop(), dv7.getLeft(), dv7.getTop());
rl.addView(lv);
// TODO: Get the coordinates of all the dots in the TableLayout. Use view tree observer.
}
private void findDotIds() {
// TODO Auto-generated method stub
dv1 = (DotView) findViewById(R.id.game_dot_1);
dv2 = (DotView) findViewById(R.id.game_dot_2);
dv3 = (DotView) findViewById(R.id.game_dot_3);
dv4 = (DotView) findViewById(R.id.game_dot_4);
dv5 = (DotView) findViewById(R.id.game_dot_5);
dv6 = (DotView) findViewById(R.id.game_dot_6);
dv7 = (DotView) findViewById(R.id.game_dot_7);
}
}
The views I want to draw lines between are in the TableLayout.
So the following process you would like to take would be to recognise when a user puts a finger down, Motion_Event.ACTION_DOWN, moves along the screen Motion_Event.ACTION_MOVE and lifts there finger up Motion_Event.ACTION_MOVE.
For more information on the above see the accepted answer here
What you want to do is if in Motion_Event.ACTION_DOWN the user is inside a view (see here for more info) start drawing a line.
Then in Motion_Event.ACTION_MOVE carry on drawing the line until they stop.
In Motion_Event.ACTION_UP if they are in another view do what you gotta do. If they arent then you erase the line and pretend it never happened.
help me solve my problem. There is a main layout RelativeLayout it is Linearlayout where I want to programmatically add view. Here is my code.
public class GenBarCodeActivity extends Activity {
BarCodeView Barview = null;
LinearLayout.LayoutParams layoutParams;
LinearLayout ll;
RelativeLayout rl;
Button getBarCode;
private static final int ID = 34646456;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_barcode);
getBarCode = (Button)findViewById(R.id.btnGetBarCode);
getBarCode.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
ll = (LinearLayout)findViewById(R.id.linearCodeView);
EANTEXT = edBarText.getText().toString();
ImageView old = (ImageView) ll.findViewById(ID);
if (old != null) {
((LinearLayout) old.getParent()).removeViewInLayout(old);
}
layoutParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
ll.addView(Barview, layoutParams);
rl.invalidate();
}
});
fillLinear();
setBarCode();
}
private void fillLinear(){
rl = (RelativeLayout)findViewById(R.id.layout_barcode);
ll = (LinearLayout)findViewById(R.id.linearCodeView);
layoutParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
ImageView imBar = new ImageView(this);
Bitmap imbitmap = BitmapFactory.decodeResource(getResources(), R.drawable.barcode);
imBar.setLayoutParams(layoutParams);
imBar.setImageBitmap(imbitmap);
imBar.setId(ID);
ll.setBackgroundColor(Color.TRANSPARENT);
ll.addView(imBar);
}
private void setBarCode(){
Barview = new BarCodeView(GenBarCodeActivity.this);
Barview.setBarCodeNum(0);
}
}
This is my View
public class BarCodeView extends View {
private static int numcode = 0;
private static String codedata = null;
public BarCodeView(Context context) {
super(context);
}
public void setBarCodeText(String text){
this.codedata = text;
}
public String getBarCodeText(){
return this.codedata;
}
public void setBarCodeNum(int num){
this.numcode = num;
}
public int getBarCodeNum(){
return this.numcode;
}
#Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
switch (numcode) {
// ean 13
case 0:
try{
showEAN13(canvas);
} catch (Exception e) {
e.printStackTrace();
}
break;
}
}
private static void showEAN13(Canvas canvas) throws Exception {
EAN13 barcode = new EAN13();
/*
EAN 13 Valid data char set:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9 (Digits)
EAN 13 Valid data length: 12 digits only, excluding the last checksum digit
*/
barcode.setData(codedata);
// for EAN13 with supplement data (2 or 5 digits)
/*
barcode.setSupData("12");
// supplement bar height vs bar height ratio
barcode.setSupHeight(0.8f);
// space between barcode and supplement barcode (in pixel)
barcode.setSupSpace(15);
*/
// Unit of Measure, pixel, cm, or inch
barcode.setUom(IBarcode.UOM_PIXEL);
// barcode bar module width (X) in pixel
barcode.setX(2f);
// barcode bar module height (Y) in pixel
barcode.setY(90f);
// barcode image margins
barcode.setLeftMargin(10f);
barcode.setRightMargin(10f);
barcode.setTopMargin(10f);
barcode.setBottomMargin(10f);
// barcode image resolution in dpi
barcode.setResolution(72);
// disply barcode encoding data below the barcode
barcode.setShowText(true);
// barcode encoding data font style
barcode.setTextFont(new AndroidFont("Arial", Typeface.NORMAL, 10));
// space between barcode and barcode encoding data
barcode.setTextMargin(6);
barcode.setTextColor(AndroidColor.black);
// barcode bar color and background color in Android device
barcode.setForeColor(AndroidColor.black);
barcode.setBackColor(AndroidColor.white);
/*
specify your barcode drawing area
*/
RectF bounds = new RectF(120, 120, 0, 0);
barcode.drawBarcode(canvas, bounds);
}
}
here is my xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/layout_barcode"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f0e0a2"
android:orientation="vertical" >
<ImageView
android:id="#+id/closeBarCode"
android:layout_width="30dip"
android:layout_height="30dip"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/txtInfo"
android:layout_marginRight="3dp"
android:src="#drawable/delete" />
<TextView
android:id="#+id/txtInfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginLeft="3dp"
android:layout_marginTop="3dp"
android:text="#string/barcode_title"
android:textColor="#000"
android:textSize="20dip" />
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/closeBarCode" >
<TextView
android:id="#+id/txtEAN"
android:layout_width="160dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="#string/barcode_ean"
android:textColor="#000"
android:textSize="20dip" />
<Spinner
android:id="#+id/spEAN"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/txtInfo"
android:layout_below="#+id/linearLayout1" >
<TextView
android:id="#+id/txtCodeColor"
android:layout_width="160dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="#string/barcode_color"
android:textColor="#000"
android:textSize="20dip" />
<Spinner
android:id="#+id/spCodeColor"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:id="#+id/linearLayout3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/linearLayout2"
android:layout_below="#+id/linearLayout2" >
<TextView
android:id="#+id/txtCodeBackColor"
android:layout_width="160dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="#string/barcode_back_color"
android:textColor="#000"
android:textSize="20dip" />
<Spinner
android:id="#+id/spCodeBackColor"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:id="#+id/linearLayout4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/linearLayout3" >
<TextView
android:id="#+id/txtCodePosition"
android:layout_width="160dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="#string/barcode_position"
android:textColor="#000"
android:textSize="20dip" />
<Spinner
android:id="#+id/spCodePosition"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:id="#+id/linearCodeView"
android:layout_width="300dip"
android:layout_height="200dip"
android:layout_below="#+id/edBarCode"
android:layout_marginRight="45dp"
android:layout_marginTop="25dip"
android:layout_toLeftOf="#+id/closeBarCode"
android:orientation="vertical" >
</LinearLayout>
<Button
android:id="#+id/btnSetBarCode"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/btnGetBarCode"
android:layout_alignBottom="#+id/btnGetBarCode"
android:layout_toLeftOf="#+id/closeBarCode"
android:text="#string/set_code" />
<Button
android:id="#+id/btnGetBarCode"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="31dp"
android:text="#string/get_code" />
<EditText
android:id="#+id/edBarCode"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/linearCodeView"
android:layout_alignRight="#+id/linearCodeView"
android:layout_below="#+id/txtCodeText"
android:layout_marginTop="23dp"
android:ems="10" />
<TextView
android:id="#+id/txtCodeText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="#+id/edBarCode"
android:layout_below="#+id/txtInfo"
android:layout_marginRight="86dp"
android:text="#string/code_text"
android:textColor="#000"
android:textSize="20dip" />
</RelativeLayout>
I need to Linearlayout "#+id/linearCodeView" insert my BarCodeView.
View is not visible after adding LinearLayout.
RelativeLayout.LayoutParams paramsBottom = new RelativeLayout.LayoutParams(android.view.ViewGroup.LayoutParams.WRAP_CONTENT,
android.view.ViewGroup.LayoutParams.WRAP_CONTENT);
rl.addView(ll, paramsBottom); //add linearlayout in relativelayout
Edit:-
LinearLayout.LayoutParams paramsBottom2 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
ll.addView(Barview, paramsBottom2);//add Barview in linearlayout
OR
RelativeLayout.LayoutParams paramsBottom2 = new RelativeLayout.LayoutParams(android.view.ViewGroup.LayoutParams.WRAP_CONTENT,
android.view.ViewGroup.LayoutParams.WRAP_CONTENT);
rl.addView(Barview, paramsBottom2);//add Barview in relativelayout
I need to align View2 top-left corner to View1's center, but I cannot figure out how to do it.
Here is how to do it!
Make an xml like
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="200dp"
android:background="#FFFF99" >
<LinearLayout
android:id="#+id/view1"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_margin="10dp"
android:background="#440000"
android:orientation="horizontal" >
</LinearLayout>
<LinearLayout
android:id="#+id/container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#id/view1"
android:layout_alignTop="#id/view1"
android:orientation="horizontal" >
<LinearLayout
android:id="#+id/view2"
android:layout_width="200dp"
android:layout_height="100dp"
android:background="#99004400"
android:orientation="horizontal" >
</LinearLayout>
</LinearLayout>
</RelativeLayout>
In your activty
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public void onWindowFocusChanged(boolean hasFocus) {
// TODO Auto-generated method stub
super.onWindowFocusChanged(hasFocus);
LinearLayout v1=(LinearLayout)findViewById(R.id.view1);
LinearLayout v2=(LinearLayout)findViewById(R.id.view2);
LinearLayout container=(LinearLayout)findViewById(R.id.container);
int heightV1=v1.getHeight();
int widthV1=v1.getWidth();
container.setPadding(widthV1/2, heightV1/2, 0, 0);
}
Gives output like
try this
RelativeLayout.LayoutParams gpsViewLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT );
gpsViewLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);
gpsViewLayoutParams.addRule(RelativeLayout.ALIGN_RIGHT);
this.relativeLayout.addView(gpsView,gpsViewLayoutParams);
Is this of any help to you?
<RelativeLayout>
<View1 />
<View2
Layout_marginTop= (view1Height/2)+view1margin
Layout_marginLeft=(view1Width/2)+view1margin />
</RelativeLayout>
I just created a view for displaying PDF file
public class PDFGraphic extends View{
String mText;
float mLastX;
float mLastY;
public float mOffX;
public float mOffY;
Canvas mCan;
Bitmap mBi;
public PDFGraphic(Context context, AttributeSet attrs){
super(context,attrs);
setPageBitmap();
setBackgroundColor(Color.TRANSPARENT);
}
public void uiInvalidate() {
postInvalidate();
}
public void setPageBitmap() {
mBi = Bitmap.createBitmap(100, 100, Config.RGB_565);
mCan = new Canvas(mBi);
mCan.drawColor(Color.RED);
}
public void onDraw(Canvas canvas) {
Paint paint = new Paint();
canvas.drawBitmap(mBi, 0, 0, paint);
}
}
And this is my xml file(pdfview):
<?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">
<RelativeLayout android:id="#+id/relativeLayout1" android:layout_width="match_parent" android:gravity="bottom|center" android:layout_height="wrap_content" android:minHeight="30px" android:visibility="visible">
<com.shawnprojectPDF.PDFGraphic android:id="#+id/pdfview1" android:layout_width="match_parent" android:layout_above="#+id/editText1" android:layout_alignParentTop="true" android:layout_height="match_parent"></com.shawnprojectPDF.PDFGraphic>
<ImageButton android:layout_height="wrap_content" android:layout_width="wrap_content" android:src="#drawable/leftarray" android:id="#+id/left" android:layout_alignParentBottom="true" android:layout_marginLeft="68px"></ImageButton>
<EditText android:id="#+id/editText1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toRightOf="#+id/left" android:layout_alignParentBottom="true" android:gravity="center" android:width="100px" android:singleLine="true" android:maxLength="12"></EditText>
<ImageButton android:layout_height="wrap_content" android:layout_width="wrap_content" android:id="#+id/right" android:src="#drawable/rightarray" android:layout_toRightOf="#+id/editText1" android:layout_alignParentBottom="true"></ImageButton>
</RelativeLayout>
</LinearLayout>
In my main activity,if setContentView(R.Layout.pdfview), the view(PDFGraphic) will not be invalidated, if setContentView(New PDFGraphic(this)),it invalidates successfully.
How to refresh the view in the whole layout.
I don't see the problem. These are the results that I get with your code (next time, you do this part). With setContentView(R.layout.pdfview), this is the result:
With setContentView(new PDFGraphic(this, null) -- note that I used the two-arg constructor because you didn't define PDFGraphic(Context) -- this is the result:
In either case, your onDraw() is happening correctly.