本文实现android系统照相机的调用来拍照
项目的布局相当简单，只有一个Button：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<Button
android:onClick="click"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="调用系统相机拍照" />
</RelativeLayout>
首先打开packages\apps\Camera文件夹下面的清单文件，找到下面的代码：
<activity android:name="com.android.camera.Camera"
android:configChanges="orientation|keyboardHidden"
android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
android:screenOrientation="landscape"
android:clearTaskOnLaunch="true"
android:taskAffinity="android.task.camera">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.media.action.IMAGE_CAPTURE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<intent-filter>
<action android:name="android.media.action.STILL_IMAGE_CAMERA" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
相关代码如下:
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void click(View view) {
/*
* <intent-filter> <action
* android:name="android.media.action.IMAGE_CAPTURE" /> <category
* android:name="android.intent.category.DEFAULT" /> </intent-filter>
*/
// 激活系统的照相机进行拍照
Intent intent = new Intent();
intent.setAction("android.media.action.IMAGE_CAPTURE");
intent.addCategory("android.intent.category.DEFAULT");
//保存照片到指定的路径
File file = new File("/sdcard/image.jpg");
Uri uri = Uri.fromFile(file);
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivity(intent);
}
}
实现激活录像功能的相关代码也很简单：
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void click(View view) {
/*
* <intent-filter> <action
* android:name="android.media.action.VIDEO_CAPTURE" /> <category
* android:name="android.intent.category.DEFAULT" /> </intent-filter>
*/
// 激活系统的照相机进行录像
Intent intent = new Intent();
intent.setAction("android.media.action.VIDEO_CAPTURE");
intent.addCategory("android.intent.category.DEFAULT");
// 保存录像到指定的路径
File file = new File("/sdcard/video.3pg");
Uri uri = Uri.fromFile(file);
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivityForResult(intent, 0);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Toast.makeText(this, "调用照相机完毕", 0).show();
super.onActivityResult(requestCode, resultCode, data);
}
}
