Android 调用系统播放器，调用系统Camera

转载自：http://blog.csdn.net/yudajun/article/details/7752226

1、调用系统音乐播放器

 

 private void playAudio(String audioPath){
         Intent intent = new Intent();
         intent.setAction(android.content.Intent.ACTION_VIEW);
         intent.setDataAndType(Uri.parse(audioPath), "audio/mp3");
         intent.setComponent(new ComponentName("com.android.music","com.android.music.MediaPlaybackActivity"));
         startActivity(intent);

     }

或者

 Intent it = new Intent(Intent.ACTION_VIEW);
         it.setDataAndType(Uri.parse("/sdcard/111.mp3"), "audio/mp3");
         startActivity(it);

 

 

2、调用系统视频播放器

 

 private void playVideo(String videoPath){
            Intent intent = new Intent(Intent.ACTION_VIEW);
            String strend="";
            if(videoPath.toLowerCase().endsWith(".mp4")){
                strend="mp4";
            }
            else if(videoPath.toLowerCase().endsWith(".3gp")){
                strend="3gp";
            }
            else if(videoPath.toLowerCase().endsWith(".mov")){
                strend="mov";
            }
            else if(videoPath.toLowerCase().endsWith(".wmv")){
                strend="wmv";
            }

            intent.setDataAndType(Uri.parse(videoPath), "video/"+strend);
            startActivity(intent);
        }

 

 

或者

 

 Intent it = new Intent(Intent.ACTION_VIEW);
         it.setDataAndType(Uri.parse("/sdcard/1122.mp4"), "video/mp4");
         startActivity(it);

 

 

播放来自网络多媒体文件

 

 String extension = MimeTypeMap.getFileExtensionFromUrl(url);
 String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
 Intent mediaIntent = new Intent(Intent.ACTION_VIEW);
 mediaIntent.setDataAndType(Uri.parse(url), mimeType);
 startActivity(mediaIntent);

 

 

调用系统Camera 

 

 public class SysCamera extends Activity {

     public static final int MEDIA_TYPE_IMAGE = 1;
     public static final int MEDIA_TYPE_VIDEO = 2;

     private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;
     private static final int CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE = 200;

     private Uri fileUri;
     Button btvideo,btphoto;

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);

         setContentView(R.layout.syscamera);

         btphoto=(Button)findViewById(R.id.sysPhoto);
         btvideo=(Button)findViewById(R.id.sysVideo);
         btphoto.setOnClickListener(new Monitor());
         btvideo.setOnClickListener(new Monitor());

     }

     private void PhotoIntent(){
          // create Intent to take a picture
         Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

         fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); // create a file to save the image
         intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name
         // start the image capture Intent
         startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
     }

     private void VideoIntent(){
          //create new Intent
         Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);

         fileUri = getOutputMediaFileUri(MEDIA_TYPE_VIDEO);  // create a file to save the video
         intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);  // set the image file name
         intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1); // set the video image quality to high
         // start the Video Capture Intent
         startActivityForResult(intent, CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE);
     }

     /** Create a file Uri for saving an image or video */
     private static Uri getOutputMediaFileUri(int type){
           return Uri.fromFile(getOutputMediaFile(type));
     }

     /** Create a File for saving an image or video */
     private static File getOutputMediaFile(int type){
         if (Environment.getExternalStorageState() == null){
             return null;
         }
         File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
                   Environment.DIRECTORY_PICTURES), "MyCameraApp");

         // Create the storage directory if it does not exist
         if (! mediaStorageDir.exists()){
             if (! mediaStorageDir.mkdirs()){
                 Log.d("MyCameraApp", "failed to create directory");
                 return null;
             }
         }

         // Create a media file name
         String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
         File mediaFile;
         if (type == MEDIA_TYPE_IMAGE){
             mediaFile = new File(mediaStorageDir.getPath() + File.separator +
             "IMG_"+ timeStamp + ".jpg");
         } else if(type == MEDIA_TYPE_VIDEO) {
             mediaFile = new File(mediaStorageDir.getPath() + File.separator +
             "VID_"+ timeStamp + ".mp4");
         } else {
             return null;
         }

         return mediaFile;
     }

      @Override
      public void onBackPressed() {
             Intent in=new Intent(this, MyRecorderActivity.class);
             startActivity(in);
             super.onBackPressed();
         }

     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
             if (resultCode == RESULT_OK) {
                 // Image captured and saved to fileUri specified in the Intent
                 Toast.makeText(this, "Image saved to:\n" +
                          data.getData(), Toast.LENGTH_LONG).show();
             } else if (resultCode == RESULT_CANCELED) {
                 // User cancelled the image capture
             } else {
                 // Image capture failed, advise user
             }
         }

         if (requestCode == CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE) {
             if (resultCode == RESULT_OK) {
                 // Video captured and saved to fileUri specified in the Intent
                 Toast.makeText(this, "Video saved to:\n" +
                          data.getData(), Toast.LENGTH_LONG).show();
             } else if (resultCode == RESULT_CANCELED) {
                 // User cancelled the video capture
             } else {
                 // Video capture failed, advise user
             }
         }
     }

     class Monitor implements OnClickListener{

         @Override
         public void onClick(View v) {

                 switch(v.getId()){
                 case R.id.sysPhoto:
                     PhotoIntent();
                     break;
                 case R.id.sysVideo:
                     VideoIntent();
                     break;
                 }
         }
     }
 }