1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.test.hwui; 18 19 import android.app.Activity; 20 import android.content.Context; 21 import android.graphics.Canvas; 22 import android.graphics.Paint; 23 import android.os.Bundle; 24 import android.view.View; 25 import android.widget.LinearLayout; 26 27 @SuppressWarnings("UnusedDeclaration") 28 public class MultiLayersActivity extends Activity { 29 @Override onCreate(Bundle savedInstanceState)30 protected void onCreate(Bundle savedInstanceState) { 31 super.onCreate(savedInstanceState); 32 33 LinearLayout grid = new LinearLayout(this); 34 grid.setOrientation(LinearLayout.VERTICAL); 35 36 LinearLayout row1 = new LinearLayout(this); 37 row1.setOrientation(LinearLayout.HORIZONTAL); 38 grid.addView(row1, new LinearLayout.LayoutParams( 39 LinearLayout.LayoutParams.MATCH_PARENT, 0, 1.0f)); 40 41 LinearLayout row2 = new LinearLayout(this); 42 row2.setOrientation(LinearLayout.HORIZONTAL); 43 grid.addView(row2, new LinearLayout.LayoutParams( 44 LinearLayout.LayoutParams.MATCH_PARENT, 0, 1.0f)); 45 46 row1.addView(new LayerView(this, 0xffff0000), new LinearLayout.LayoutParams( 47 0, LinearLayout.LayoutParams.MATCH_PARENT, 1.0f)); 48 row1.addView(new LayerView(this, 0x0f00ff00), new LinearLayout.LayoutParams( 49 0, LinearLayout.LayoutParams.MATCH_PARENT, 1.0f)); 50 51 row2.addView(new LayerView(this, 0x0f0000ff), new LinearLayout.LayoutParams( 52 0, LinearLayout.LayoutParams.MATCH_PARENT, 1.0f)); 53 row2.addView(new LayerView(this, 0xffffff00), new LinearLayout.LayoutParams( 54 0, LinearLayout.LayoutParams.MATCH_PARENT, 1.0f)); 55 56 setContentView(grid); 57 } 58 59 private class LayerView extends View { 60 private final Paint mPaint; 61 LayerView(Context context, int color)62 public LayerView(Context context, int color) { 63 super(context); 64 mPaint = new Paint(); 65 mPaint.setColor(color); 66 setLayerType(LAYER_TYPE_HARDWARE, null); 67 } 68 69 @Override onDraw(Canvas canvas)70 protected void onDraw(Canvas canvas) { 71 canvas.drawRect(0.0f, 0.0f, getWidth(), getHeight(), mPaint); 72 invalidate(); 73 } 74 } 75 } 76