1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.test.hwui;
import android.app.Activity;
import android.graphics.SurfaceTexture;
import android.hardware.Camera;
import android.os.Bundle;
import android.view.Gravity;
import android.view.TextureView;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;
import java.io.IOException;
@SuppressWarnings({"UnusedDeclaration"})
public class TextureViewActivity extends Activity implements TextureView.SurfaceTextureListener {
private Camera mCamera;
private TextureView mTextureView;
private FrameLayout mContent;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mContent = new FrameLayout(this);
mTextureView = new TextureView(this);
mTextureView.setSurfaceTextureListener(this);
Button button = new Button(this);
button.setText("Remove/Add");
button.setOnClickListener(new View.OnClickListener() {
private boolean mAdded = true;
@Override
public void onClick(View v) {
if (mAdded) {
mContent.removeView(mTextureView);
} else {
mContent.addView(mTextureView);
}
mAdded = !mAdded;
}
});
mContent.addView(mTextureView, new FrameLayout.LayoutParams(
FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT,
Gravity.CENTER));
mContent.addView(button, new FrameLayout.LayoutParams(
FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT,
Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM));
setContentView(mContent);
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
mCamera = Camera.open();
Camera.Size previewSize = mCamera.getParameters().getPreviewSize();
mTextureView.setLayoutParams(new FrameLayout.LayoutParams(
previewSize.width, previewSize.height, Gravity.CENTER));
try {
mCamera.setPreviewTexture(surface);
} catch (IOException t) {
android.util.Log.e("TextureView", "Cannot set preview texture target!", t);
}
mCamera.startPreview();
mTextureView.setCameraDistance(5000);
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
// Ignored, the Camera does all the work for us
}
@Override
public void onSurfaceTextureDestroyed(SurfaceTexture surface) {
mCamera.stopPreview();
mCamera.release();
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
// Ignored
}
}
|
