Android Intent用法详解

如果是从BroadcastReceiver 启动一个新的Activity , 不要忘记i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

public class MyReceiver extends BroadcastReceiver{

public static final String action=”acc”;
public void onReceive(Context context, Intent intent) {
Intent i=new Intent(context,Receivered.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}

}

1. 指定act ion 和type
// SIM import
Intent importIntent = new Intent(Intent.ACTION_VIEW);
importIntent.setType(“vnd.android.cursor.item/sim-contact”);
importIntent.setClassName(“com.android.phone”, “com.android.phone.SimContacts”);
menu.add(0, 0, 0, R.string.importFromSim)
.setIcon(R.drawable.ic_menu_import_contact)
.setIntent(importIntent);

2. 指定act ion, da ta和type
(1)隐式查找type
示例代码：
uri: content://simcontacts/simPeople/(id)
intent = new Intent(“android.intent.action.SIMEDIT”,uri);
startActivity(intent);

程序会很据data中的uri去查找匹配的type（必须的）
provider中的getType()
case SIM_PEOPLE_ID:
return “vnd.android.cursor.item/sim-contact”;

配置文件中的filter设定
AndroidManifest.xml


也可以自己设定type，但只能使用 setDataAndType()

3. 其他设定intent的属性方式
Intent setComponent(ComponentName component)
Intent setClassName(Context packageContext, String className)
Intent setClassName(String packageName, String className)
Intent setClass(Context packageContext, Class cls)
打开其他APK文件的ACTIVITY

Intent mIntent = new Intent();
ComponentName comp = new ComponentName(“com.android.a”,”com.android.a.AbcActivity” );
mIntent.setComponent(comp);
mIntent.setAction(“android.intent.action.MAIN”);
startActivity(mIntent);

显示网页:

1. Uri uri = Uri.parse(“http://www.google.com”);

2. Intent it = new Intent(Intent.ACTION_VIEW,uri);

3. startActivity(it);

显示地图:

1. Uri uri = Uri.parse(“geo:38.899533,-77.036476″);

2. Intent it = new Intent(Intent.Action_VIEW,uri);

3. startActivity(it);

路径规划:

1. Uri uri = Uri.parse(“http://maps.google.com/maps?f=d&saddr=startLat%20startLng&daddr=endLat%20endLng&hl=en”);

2. Intent it = new Intent(Intent.ACTION_VIEW,URI);

3. startActivity(it);

拨打电话:
调用拨号程序

1. Uri uri = Uri.parse(“tel:xxxxxx”);

2. Intent it = new Intent(Intent.ACTION_DIAL, uri);

3. startActivity(it);

1. Uri uri = Uri.parse(“tel.xxxxxx”);

2. Intent it =new Intent(Intent.ACTION_CALL,uri);

3. 要使用这个必须在配置文件中加入

发送SMS/MMS
调用发送短信的程序

1. Intent it = new Intent(Intent.ACTION_VIEW);

2. it.putExtra(“sms_body”, “The SMS text”);

3. it.setType(“vnd.android-dir/mms-sms”);

4. startActivity(it);

发送短信

1. Uri uri = Uri.parse(“smsto:0800000123″);

2. Intent it = new Intent(Intent.ACTION_SENDTO, uri);

3. it.putExtra(“sms_body”, “The SMS text”);

4. startActivity(it);

发送彩信

1. Uri uri = Uri.parse(“content://media/external/images/media/23″);

2. Intent it = new Intent(Intent.ACTION_SEND);

3. it.putExtra(“sms_body”, “some text”);

4. it.putExtra(Intent.EXTRA_STREAM, uri);

5. it.setType(“image/png”);

6. startActivity(it);

发送Email

1.

2. Uri uri = Uri.parse(“mailto:[email protected]”);

3. Intent it = new Intent(Intent.ACTION_SENDTO, uri);

4. startActivity(it);

1. Intent it = new Intent(Intent.ACTION_SEND);

2. it.putExtra(Intent.EXTRA_EMAIL, “[email protected]”);

3. it.putExtra(Intent.EXTRA_TEXT, “The email body text”);

4. it.setType(“text/plain”);

5. startActivity(Intent.createChooser(it, “Choose Email Client”));

1. Intent it=new Intent(Intent.ACTION_SEND);

2. String[] tos={“[email protected]”};

3. String[] ccs={“[email protected]”};

4. it.putExtra(Intent.EXTRA_EMAIL, tos);

5. it.putExtra(Intent.EXTRA_CC, ccs);

6. it.putExtra(Intent.EXTRA_TEXT, “The email body text”);

7. it.putExtra(Intent.EXTRA_SUBJECT, “The email subject text”);

8. it.setType(“message/rfc822″);

9. startActivity(Intent.createChooser(it, “Choose Email Client”));

添加附件

1. Intent it = new Intent(Intent.ACTION_SEND);

2. it.putExtra(Intent.EXTRA_SUBJECT, “The email subject text”);

3. it.putExtra(Intent.EXTRA_STREAM, “file:///sdcard/mysong.mp3″);

4. sendIntent.setType(“audio/mp3″);

5. startActivity(Intent.createChooser(it, “Choose Email Client”));

播放多媒体

//方法1.

Uri uri = Uri.parse(“file:///sdcard/song.mp3″);
Intent it = new Intent(Intent.ACTION_VIEW, uri);
// it.addFlags(it.FLAG_ACTIVITY_NEW_TASK);//非必须选项
it.setDataAndType(uri, “audio/mp3″);
context.startActivity(it);

//方法2.

1.

2. Intent it = new Intent(Intent.ACTION_VIEW);

3. Uri uri = Uri.parse(“file:///sdcard/song.mp3″);

4. it.setDataAndType(uri, “audio/mp3″);

5. startActivity(it);

//方法3. 启动一个播放器并播放一个系统声音

1. Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, “1″);

2. Intent it = new Intent(Intent.ACTION_VIEW, uri);

3. startActivity(it);

Uninstall 程序

1. Uri uri = Uri.fromParts(“package”, strPackageName, null);

2. Intent it = new Intent(Intent.ACTION_DELETE, uri);

3. startActivity(it);

uninstall apk

1. Uri uninstallUri = Uri.fromParts(“package”, “xxx”, null);

2.

3. returnIt = new Intent(Intent.ACTION_DELETE, uninstallUri);

install apk

1. Uri installUri = Uri.fromParts(“package”, “xxx”, null);

2.

3. returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);

play audio

1. Uri playUri = Uri.parse(“file:///sdcard/download/everything.mp3″);

2.

3. returnIt = new Intent(Intent.ACTION_VIEW, playUri);

哈，原来你还没贴完，我再加个:

1. //发送附件

2. Intent it = new Intent(Intent.ACTION_SEND);

3. it.putExtra(Intent.EXTRA_SUBJECT, “The email subject text”);

4. it.putExtra(Intent.EXTRA_STREAM, “file:///sdcard/eoe.mp3″);

5. sendIntent.setType(“audio/mp3″);

6. startActivity(Intent.createChooser(it, “Choose Email Client”));

market相关

market相关

再来一个market相关的：
market相关

1. //搜索应用

2. Uri uri = Uri.parse(“market://search?q=pname:pkg_name”);

3. Intent it = new Intent(Intent.ACTION_VIEW, uri);

4. startActivity(it);

5. //where pkg_name is the full package path for an application

7. //显示指定应用的详细页面（这个好像不支持了，找不到app_id）

8. Uri uri = Uri.parse(“market://details?id=app_id”);

9. Intent it = new Intent(Intent.ACTION_VIEW, uri);

10. startActivity(it);

Uninstall 应用程序
1. Uri uri = Uri.fromParts(“package”, strPackageName, null);
2. Intent it = new Intent(Intent.ACTION_DELETE, uri);
3. startActivity(it);

1、调用其自带的播放器：
[java]

    Uri uri = Uri.parse(Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v");     
    //调用系统自带的播放器     
        Intent intent = new Intent(Intent.ACTION_VIEW);    
        Log.v("URI:::::::::", uri.toString());    
        intent.setDataAndType(uri, "video/mp4");    
        startActivity(intent);    

2、使用VideoView来实现：

[java]

    Uri uri = Uri.parse(Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v");    
    VideoView videoView = (VideoView)this.findViewById(R.id.video_view);    
    videoView.setMediaController(new MediaController(this));    
    videoView.setVideoURI(uri);    
    videoView.start();    
    videoView.requestFocus();    

3、使用MediaPlayer：

[java]

    package demo.camera;    
    import java.io.IOException;    
    import Android.app.Activity;    
    import Android.media.MediaPlayer;    
    import Android.media.MediaPlayer.OnCompletionListener;    
    import Android.media.MediaPlayer.OnErrorListener;    
    import Android.media.MediaPlayer.OnInfoListener;    
    import Android.media.MediaPlayer.OnPreparedListener;    
    import Android.media.MediaPlayer.OnSeekCompleteListener;    
    import Android.media.MediaPlayer.OnVideoSizeChangedListener;    
    import Android.os.Bundle;    
    import Android.os.Environment;    
    import Android.util.Log;    
    import Android.view.Display;    
    import Android.view.SurfaceHolder;    
    import Android.view.SurfaceView;    
    import Android.widget.LinearLayout;    
    /**  
     * 该实例中使用MediaPlayer完成播放，同时界面使用SurfaceView来实现  
     *   
     * 这里我们实现MediaPlayer中很多状态变化时的监听器  
     *   
     * 使用Mediaplayer时，也可以使用MediaController类，但是需要实现MediaController.mediaController接口  
     * 实现一些控制方法。  
     *   
     * 然后，设置controller.setMediaPlayer(),setAnchorView(),setEnabled(),show()就可以了，这里不再实现  
     * @author Administrator  
     *  
     */    
    public class VideoSurfaceDemo extends Activity implements OnCompletionListener,OnErrorListener,OnInfoListener,    
        OnPreparedListener, OnSeekCompleteListener,OnVideoSizeChangedListener,SurfaceHolder.Callback{    
        private Display currDisplay;    
        private SurfaceView surfaceView;    
        private SurfaceHolder holder;    
        private MediaPlayer player;    
        private int vWidth,vHeight;    
        //private boolean readyToPlay = false;     
                
        public void onCreate(Bundle savedInstanceState){    
            super.onCreate(savedInstanceState);    
            this.setContentView(R.layout.video_surface);    
                        
            surfaceView = (SurfaceView)this.findViewById(R.id.video_surface);    
            //给SurfaceView添加CallBack监听     
            holder = surfaceView.getHolder();    
            holder.addCallback(this);    
            //为了可以播放视频或者使用Camera预览，我们需要指定其Buffer类型     
            holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);    
                
            //下面开始实例化MediaPlayer对象     
            player = new MediaPlayer();    
            player.setOnCompletionListener(this);    
            player.setOnErrorListener(this);    
            player.setOnInfoListener(this);    
            player.setOnPreparedListener(this);    
            player.setOnSeekCompleteListener(this);    
            player.setOnVideoSizeChangedListener(this);    
            Log.v("Begin:::", "surfaceDestroyed called");    
            //然后指定需要播放文件的路径，初始化MediaPlayer     
            String dataPath = Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v";    
            try {    
                player.setDataSource(dataPath);    
                Log.v("Next:::", "surfaceDestroyed called");    
            } catch (IllegalArgumentException e) {    
                e.printStackTrace();    
            } catch (IllegalStateException e) {    
                e.printStackTrace();    
            } catch (IOException e) {    
                e.printStackTrace();    
            }    
            //然后，我们取得当前Display对象     
            currDisplay = this.getWindowManager().getDefaultDisplay();    
        }    
            
        @Override    
        public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {    
            // 当Surface尺寸等参数改变时触发     
            Log.v("Surface Change:::", "surfaceChanged called");    
        }    
        @Override    
        public void surfaceCreated(SurfaceHolder holder) {    
            // 当SurfaceView中的Surface被创建的时候被调用     
            //在这里我们指定MediaPlayer在当前的Surface中进行播放     
            player.setDisplay(holder);    
            //在指定了MediaPlayer播放的容器后，我们就可以使用prepare或者prepareAsync来准备播放了     
            player.prepareAsync();    
                
        }    
        @Override    
        public void surfaceDestroyed(SurfaceHolder holder) {    
                
            Log.v("Surface Destory:::", "surfaceDestroyed called");    
        }    
        @Override    
        public void onVideoSizeChanged(MediaPlayer arg0, int arg1, int arg2) {    
            // 当video大小改变时触发     
            //这个方法在设置player的source后至少触发一次     
            Log.v("Video Size Change", "onVideoSizeChanged called");    
                
        }    
        @Override    
        public void onSeekComplete(MediaPlayer arg0) {    
            // seek操作完成时触发     
            Log.v("Seek Completion", "onSeekComplete called");    
                
        }    
        @Override    
        public void onPrepared(MediaPlayer player) {    
            // 当prepare完成后，该方法触发，在这里我们播放视频     
                
            //首先取得video的宽和高     
            vWidth = player.getVideoWidth();    
            vHeight = player.getVideoHeight();    
                
            if(vWidth > currDisplay.getWidth() || vHeight > currDisplay.getHeight()){    
                //如果video的宽或者高超出了当前屏幕的大小，则要进行缩放     
                float wRatio = (float)vWidth/(float)currDisplay.getWidth();    
                float hRatio = (float)vHeight/(float)currDisplay.getHeight();    
                    
                //选择大的一个进行缩放     
                float ratio = Math.max(wRatio, hRatio);    
                    
                vWidth = (int)Math.ceil((float)vWidth/ratio);    
                vHeight = (int)Math.ceil((float)vHeight/ratio);    
                    
                //设置surfaceView的布局参数     
                surfaceView.setLayoutParams(new LinearLayout.LayoutParams(vWidth, vHeight));    
                    
                //然后开始播放视频     
                    
                player.start();    
            }    
        }    
        @Override    
        public boolean onInfo(MediaPlayer player, int whatInfo, int extra) {    
            // 当一些特定信息出现或者警告时触发     
            switch(whatInfo){    
            case MediaPlayer.MEDIA_INFO_BAD_INTERLEAVING:    
                break;    
            case MediaPlayer.MEDIA_INFO_METADATA_UPDATE:      
                break;    
            case MediaPlayer.MEDIA_INFO_VIDEO_TRACK_LAGGING:    
                break;    
            case MediaPlayer.MEDIA_INFO_NOT_SEEKABLE:     
                break;    
            }    
            return false;    
        }    
        @Override    
        public boolean onError(MediaPlayer player, int whatError, int extra) {    
            Log.v("Play Error:::", "onError called");    
            switch (whatError) {    
            case MediaPlayer.MEDIA_ERROR_SERVER_DIED:    
                Log.v("Play Error:::", "MEDIA_ERROR_SERVER_DIED");    
                break;    
            case MediaPlayer.MEDIA_ERROR_UNKNOWN:    
                Log.v("Play Error:::", "MEDIA_ERROR_UNKNOWN");    
                break;    
            default:    
                break;    
            }    
            return false;    
        }    
        @Override    
        public void onCompletion(MediaPlayer player) {    
            // 当MediaPlayer播放完成后触发     
            Log.v("Play Over:::", "onComletion called");    
            this.finish();    
        }    
    }