android - 如何知道我是否应该在布局中使用 ldpi

Question

大家好，我正在努力实现多屏幕支持。 是否有类似案例？

 @Override
 protected void onCreate(Bundle savedInstanceState) {

     super.onCreate(savedInstanceState);
     setContentView(R.layout.contatti);

    //if (device in use , use ldpi ) { do something
    else{


     Button btnNavigator = (Button) findViewById(R.id.btnNavigator);

     GoogleMap map=((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
     map.moveCamera(CameraUpdateFactory.newLatLngZoom(STARTING_POINT, 5));

非常感谢。你能给我举个例子吗？

Answer 1

试试这段代码:

private final boolean isLdpi()
{
    final DisplayMetrics metrics =
        Resources.getSystem().getDisplayMetrics();

    final float scale = metrics.density;

    return (scale == 0.75); // ldpi = 0.75, mdpi = 1.0, hdpi = 1.5, xhdpi = 2.0, xxhdpi = 3.0, ...
}

用法:

if (isLdpi)
{
    // It's ldpi: do something
}