Call requires permission which may be rejected by user
Call requires permission which may be rejected by user: code should explicitly check to see if permission is available (with `checkPermission`) or explicitly handle a potential `SecurityException`
try {
// your code for example:
// LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
// Criteria criteria = new Criteria();
// provider = locationManager.getBestProvider(criteria, false);
// locationManager.requestLocationUpdates(provider, 400, 1, this);
} catch (SecurityException e) {
e.printStackTrace();
}
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Example source code for Android development. How set gray text to EditText when EditText is blank.
Hint text to display when the text is empty.
In layout/main.xml insert to EditText row Attribute Name android:hint="Some text"
Programatically you can use method setHint:
Hint text to display when the text is empty.
In layout/main.xml insert to EditText row Attribute Name android:hint="Some text"
<EditText
android:id="@+id/myEdit"
android:layout_height="wrap_content" android:layout_width="fill_parent"
android:hint="Some text"
android:singleLine="true"
</EditText>
Programatically you can use method setHint:
// setHint(CharSequence hint) example
(EditText)findViewById(R.id.myEdit).setHint("My text");
// or int resId as method setHint(int resId)
EditText myEdit = findViewById(R.id.myEdit);
myEdit.setHint(R.string.app_name);
The method onClick(DialogInterface, int) of type new DialogInterface.OnClickListener(){} must override a superclass method.
Try this:
Right click on project
Select Properties
In open dialogue select Java compiler
Set Enable project specific settings
Set Compiler compliance level to 1.6
Try this:
Right click on project
Select Properties
In open dialogue select Java compiler
Set Enable project specific settings
Set Compiler compliance level to 1.6
FLAG_KEEP_SCREEN_ON saving energy. Protects the battery if a user closing applications using the Return button on device. The device will returned to user screen mode settings.
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
//..........
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
}
ACRA allows your Android application to send Crash Reports to various destinations:
a Google Docs spreadsheet (default and original behavior)
an email
your own server-side HTTP POST script
any other possible destination by implementing your own report sender
ACRA wiki and download page of project library
a Google Docs spreadsheet (default and original behavior)
an email
your own server-side HTTP POST script
any other possible destination by implementing your own report sender
ACRA wiki and download page of project library
If some memory leak - problem try release of memory used of a big Bitmap what already not to need;
//developer.android.com/reference/android/graphics/Bitmap.html
Free the native object associated with this bitmap, and clear the reference to the pixel data. This will not free the pixel data synchronously; it simply allows it to be garbage collected if there are no other references. The bitmap is marked as "dead”, meaning it will throw an exception if getPixels() or setPixels() is called, and will draw nothing. This operation cannot be reversed, so it should only be called if you are sure there are no further uses for the bitmap. This is an advanced call, and normally need not be called, since the normal GC process will free up this memory when there are no more references to this bitmap.
Bitmpap bmp; // not null
bmp.recycle();
bmp = null;
final boolean bmpIsRecycled = bmp.isRecycled()
// Returns true if this bitmap has been recycled.
//developer.android.com/reference/android/graphics/Bitmap.html
Free the native object associated with this bitmap, and clear the reference to the pixel data. This will not free the pixel data synchronously; it simply allows it to be garbage collected if there are no other references. The bitmap is marked as "dead”, meaning it will throw an exception if getPixels() or setPixels() is called, and will draw nothing. This operation cannot be reversed, so it should only be called if you are sure there are no further uses for the bitmap. This is an advanced call, and normally need not be called, since the normal GC process will free up this memory when there are no more references to this bitmap.
Editace: 2017-03-11 11:37:46
Počet článků v kategorii: 396
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