drawBitmap, clipPath, UNION, DIFFERENCE, INTERSECT, REPLACE, XOR Android example
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new SampleView(this));
}
private static class SampleView extends View {
// CONSTRUCTOR
public SampleView(Context context) {
super(context);
setFocusable(true);
}
@Override
protected void onDraw(Canvas canvas) {
Paint paint = new Paint();
canvas.drawColor(Color.YELLOW);
Bitmap b = Bitmap.createBitmap(200, 200,
Bitmap.Config.ARGB_8888);
// you need to insert a image flower_blue into res/drawable folder
paint.setFilterBitmap(true);
Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(),
R.drawable.flower_blue);
canvas.drawBitmap(bitmapOrg, 10, 10, paint);
int width, height;
Canvas c = new Canvas(b);
paint.setAlpha(255); //0x80
c.translate(0, 30);
c.drawBitmap(bitmapOrg, new Matrix(), paint);
paint.setColor(Color.BLUE);
Path mPath = new Path();
mPath.addCircle(50, 50, 50, Path.Direction.CCW);
//c.clipPath(mPath, Region.Op.UNION);
//c.clipPath(mPath, Region.Op.DIFFERENCE);
c.clipPath(mPath, Region.Op.INTERSECT);
//c.clipPath(mPath, Region.Op.REPLACE);
//c.clipPath(mPath, Region.Op.XOR);
paint.setColor(Color.GREEN);
paint.setAntiAlias(true);
c.drawCircle(30, 20, 30, paint);
int h = bitmapOrg.getHeight();
//canvas.drawBitmap(bitmapOrg, 10, 10, paint);
canvas.drawBitmap(b, 0, 10 + h + 10, paint);
}
}
}
397LW NO topic_id
Další témata ....(Topics)
Issue: Cropped superscript index between tags sup /sup is not correctly visible in TextView or View as Button.
String s = "10<sup>12 </sup>";
textView.setText(Html.fromHtml(s)); // 12 will cropped
// solution:
s = "10<sup>12 </sup>\t "; // add behind ending of sup tag the tabulator \t,
// but not char \t but only press to TAB key!!! in source code
textView.setText(Html.fromHtml(s)); // 12 is visible correctly
Warning: The application may be doing too much work on its main thread
Try this sorce code:
Try this sorce code:
import android.os.StrictMode;
public class MyActivity extends Activity {
static{
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
@Override
public void onCreate(Bundle savedInstanceState) {
//.................. etc.
Foreach in Java basic example source code.
MainClass.java
MainClass.java
public class MainClass {
public static void main(String[] arg) {
String[] arrayOfString = { "Hello", "people", "hello", "world!" };
for (String s : arrayOfString)
System.out.println(s);
}
}
Dialog Yes No sample code
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Are you sure you want to exit application?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
MyActivity.this.finish(); //Close this Activity for example: MyActivity.java
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// some code if you want
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
How get Android SDK location - PATH on PC from Eclipse tutorial.
- Open dialog from menu Window -> AVD and SDK manager
- In dialog select Available packages
- On top of dialog will displayed similar path: SKD Location: C:\PROGRA~1\Android\android-sdk-windows\
Editace Jana Žákovská : 2011-11-16 17:52:26
Počet článků v kategorii: 397
Url:drawbitmap-clippath-union-difference-intersect-replace-xor-android-example
