在页面添加一个透明Layout

假设有一个Layout,布局如下:
splash.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:gravity="center_vertical|center_horizontal"
	android:orientation="horizontal" android:layout_width="fill_parent"
	android:layout_height="fill_parent" android:id="@+id/progressShadow">
	<ProgressBar android:layout_gravity="center_vertical"
		android:id="@+id/progress" android:layout_width="50dp"
		android:layout_height="50dp">
	</ProgressBar>
	<TextView android:id="@+id/current_action"
		android:layout_toRightOf="@id/progress" android:layout_width="wrap_content"
		android:layout_height="wrap_content" android:layout_marginLeft="5.0dip"
		android:text="@string/loading" android:textSize="20sp">
	</TextView>
</LinearLayout>

我们可以通过如下方式来动态添加到一个Activity页面上面:

private int KEY_PROGRESS_LAYOUT_ID = 1;
	private Handler handler = new Handler();
	public void add() {
		LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
				320, LinearLayout.LayoutParams.FILL_PARENT);
		LayoutInflater inflater = (LayoutInflater) login
				.getSystemService(Login.LAYOUT_INFLATER_SERVICE);
		layout = inflater.inflate(R.layout.splash, null);
		layout.setId(KEY_PROGRESS_LAYOUT_ID);
		// progressShadow = (LinearLayout) layout
		// .findViewById(Constants.KEY_PROGRESS_LAYOUT_ID);

		final TextView tv = (TextView) layout.findViewById(R.id.current_action);
		handler.post(new Runnable() {
			public void run() {
				tv.setText("Loading....");
			}
		});

		Drawable ico = login.getResources().getDrawable(R.drawable.dbg);
		layout.setBackgroundDrawable(ico);
		ico.mutate().setAlpha(200);

		animLayout.addView(view, layoutParams);
	}

评论

1 楼 ivanhxy 2011-08-23  

写得很好。转到Touch android 了