Dialog dialog = new Dialog(MainActivity.this, R.style.dialog);
ImageView img = new ImageView(MainActivity.this);
img.setImageResource(R.drawable.a);
img.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.FILL_PARENT));
dialog.setContentView(img);
dialog.show(); <style name="dialog" parent="@android:style/Theme.Holo.Light.Dialog">
<item name="android:windowNoTitle">true</item>
</style>
ImageView img = new ImageView(MainActivity.this);
img.setImageResource(R.drawable.a);
img.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.FILL_PARENT));
dialog.setContentView(img);
dialog.show(); <style name="dialog" parent="@android:style/Theme.Holo.Light.Dialog">
<item name="android:windowNoTitle">true</item>
</style>
dialog.show();
WindowManager.LayoutParams lp = dialogWindow.getAttributes();
lp.x = 100;
lp.y = -300;
lp.width = 266.4 * 3;//这里如果你是xxhdpi,那么值就是3,hdpi的话,值就是2,xhdpi的值应该是2.5
dialogWindow.setAttributes(lp);