本文實現android系統照相機的調用來拍照
項目的布局相當簡單，只有一個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="調用系統相機拍照" /></RelativeLayout>
首先打開packages/apps/Camera文件夾下面的清單文件，找到下面的代碼：
<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>
相關代碼如下:
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> */ // 激活系統的照相機進行拍照 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徑 File file = new File("/sdcard/image.jpg"); Uri uri = Uri.fromFile(file); intent.putExtra(MediaStore.EXTRA_OUTPUT, uri); startActivity(intent); }}實現激活錄像功能的相關代碼也很簡單：
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> */ // 激活系統的照相機進行錄像 Intent intent = new Intent(); intent.setAction("android.media.action.VIDEO_CAPTURE"); intent.addCategory("android.intent.category.DEFAULT"); // 保存錄像到指定的路徑 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, "調用照相機完畢", 0).show(); super.onActivityResult(requestCode, resultCode, data); }}新聞熱點
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