1) Add android:windowSoftInputMode="adjustPan" attribute into AndroidManifest.xml file on the activity where the ListView is presented.
2) Add android:descendantFocusability="afterDescendants" attribute onto the ListView itself.
viernes, 27 de febrero de 2015
viernes, 13 de febrero de 2015
Android: Save screenshot to file, write to an internal file
Save screenshot to file
private void saveScreenshot() {
View view = (View) topMostView;
view.setDrawingCacheEnabled(true);
Bitmap b = view.getDrawingCache();
String extr = Environment.getExternalStorageDirectory().toString();
Date date = Calendar.getInstance().getTime();
DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss");
String now = formatter.format(date);
File myPath = new File(extr, "screenshot_" + now + ".jpg");
FileOutputStream fos = null;
try {
fos = new FileOutputStream(myPath);
b.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Write to internal file (no permission are required)String filename = "myfile";
String string = "Hello world!";
FileOutputStream outputStream;
try {
outputStream = openFileOutput(filename, Context.MODE_PRIVATE);
outputStream.write(string.getBytes());
outputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
martes, 3 de febrero de 2015
Android: Simple animation
Animation
private void animateOpen() {
Animation loadAnimation = AnimationUtils.loadAnimation(getContext(),
R.anim.slide_in_from_top);
loadAnimation.setFillAfter(true);
loadAnimation.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
setVisibility(View.VISIBLE);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
opened = !opened;
}
});
startAnimation(loadAnimation);
}
res/anim/slide_in_from_top<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="500"
android:fromYDelta="-100%"
android:interpolator="@android:anim/decelerate_interpolator"
android:toYDelta="0"
android:zAdjustment="top" />
</set>
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