转载《Intent的一些用法（不断更新）》

Intent用法实例 

1.无参数Activity跳转 

Intent it = new Intent(Activity.Main.this, Activity2.class);
startActivity(it);

  


2.向下一个Activity传递数据（使用Bundle和Intent.putExtras） 

Intent it = new Intent(Activity.Main.this, Activity2.class);
Bundle bundle=new Bundle();
bundle.putString("name", "This is from MainActivity!");
it.putExtras(bundle);       // it.putExtra(“test”, "shuju”);
startActivity(it);            // startActivityForResult(it,REQUEST_CODE);

对于数据的获取可以采用： 

Bundle bundle=getIntent().getExtras();
String name=bundle.getString("name");

3.向上一个Activity返回结果（使用setResult，针对startActivityForResult(it,REQUEST_CODE)启动的Activity） 

Intent intent=getIntent();
        Bundle bundle2=new Bundle();
        bundle2.putString("name", "This is from ShowMsg!");
        intent.putExtras(bundle2);
        setResult(RESULT_OK, intent);

        

4.回调上一个Activity的结果处理函数（onActivityResult） 

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode==REQUEST_CODE){
            if(resultCode==RESULT_CANCELED)
                  setTitle("cancle");
            else if (resultCode==RESULT_OK) {
                 String temp=null;
                 Bundle bundle=data.getExtras();
                 if(bundle!=null)   temp=bundle.getString("name");
                 setTitle(temp);
            }
        }
    }

下面是转载来的其他的一些Intent用法实例（转自javaeye） 

显示网页 

1. Uri uri = Uri.parse("http://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);
   4. //其他 geo URI 範例
   5. //geo:latitude,longitude
   6. //geo:latitude,longitude?z=zoom
   7. //geo:0,0?q=my+street+address
   8. //geo:0,0?q=business+near+city
   9. //google.streetview:cbll=lat,lng&cbp=1,yaw,,pitch,zoom&mz=mapZoom

   

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);
   4. //where startLat, startLng, endLat, endLng are a long with 6 decimals like: 50.123456

   
打电话 

1. //叫出拨号程序
   2. Uri uri = Uri.parse("tel:[phone]");
   3. Intent it = new Intent(Intent.ACTION_DIAL, uri);
   4. startActivity(it);
   1. //直接打电话出去
   2. Uri uri = Uri.parse("tel:[phone]");
   3. Intent it = new Intent(Intent.ACTION_CALL, uri);
   4. startActivity(it);
   5. //用這個，要在 AndroidManifest.xml 中，加上
   6. //<uses-permission id="android.permission.CALL_PHONE" />

   

传送SMS/MMS 

1. //调用短信程序
   2. Intent it = new Intent(Intent.ACTION_VIEW, uri);
   3. it.putExtra("sms_body", "The SMS text");
   4. it.setType("vnd.android-dir/mms-sms");
   5. startActivity(it);
   1. //传送消息
   2. Uri uri = Uri.parse("smsto://0800000123");
   3. Intent it = new Intent(Intent.ACTION_SENDTO, uri);
   4. it.putExtra("sms_body", "The SMS text");
   5. startActivity(it);
   1. //传送 MMS
   2. Uri uri = Uri.parse("content://media/external/images/media/23");
   3. Intent it = new Intent(Intent.ACTION_SEND);
   4. it.putExtra("sms_body", "some text");
   5. it.putExtra(Intent.EXTRA_STREAM, uri);
   6. it.setType("image/png");
   7. startActivity(it);

   

传送 Email 

1. Uri uri = Uri.parse("mailto:[e-mail]");
  2. Intent it = new Intent(Intent.ACTION_SENDTO, uri);
  3. startActivity(it);


  1. Intent it = new Intent(Intent.ACTION_SEND);
  2. it.putExtra(Intent.EXTRA_EMAIL, "[e-mail]");
  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={"[e-mail]"};
  3. String[] ccs={"[e-mail]"};
  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"));

   


   传送附件 
  

Intent it = new Intent(Intent.ACTION_SEND);
   it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
   it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/mysong.mp3");
   sendIntent.setType("audio/mp3");
   startActivity(Intent.createChooser(it, "Choose Email Client"));

   

播放多媒体 

Uri uri = Uri.parse("file:///sdcard/song.mp3");
      Intent it = new Intent(Intent.ACTION_VIEW, uri);
      it.setType("audio/mp3");
      startActivity(it);
      Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");
      Intent it = new Intent(Intent.ACTION_VIEW, uri);
      startActivity(it);

      

Market 相关 
        //寻找某个应用 

Uri uri = Uri.parse("market://search?q=pname:pkg_name");
     Intent it = new Intent(Intent.ACTION_VIEW, uri);
     startActivity(it);

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

显示某个应用的相关信息
       Uri uri = Uri.parse("market://details?id=app_id");
      Intent it = new Intent(Intent.ACTION_VIEW, uri);
       startActivity(it);
       //where app_id is the application ID, find the ID
       //by clicking on your application on Market home
       //page, and notice the ID from the address bar

       
发起一个应用程序 
ComponentName 两个参数一个是包名 一个是包下的主类 

final Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
final ComponentName cn = new ComponentName("com.android.settings","com.android.settings.fuelgauge.PowerUsageSummary");
intent.setComponent(cn);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity( intent);

Uninstall 应用程序 

Uri uri = Uri.fromParts("package", strPackageName, null);
       Intent it = new Intent(Intent.ACTION_DELETE, uri);
        startActivity(it);

        

返回桌面 

Intent unMyIntent = new Intent(Intent.ACTION_MAIN);
            unMyIntent.addCategory(Intent.CATEGORY_HOME);
            startActivity(unMyIntent);

发邮件 

Uri uri = Uri.parse("mailto:[e-mail]");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);

发送文件 

Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
intent.setType(mimeType);
intent.putExtra(Intent.EXTRA_STREAM, uri);
 startActivity(intent);

以上有两个变量需要说明:
1. mimeType: 如果是图片,则为"image/*",如果是音频,则为"audio/*",如果是视频,则为"video/*"
2. uri:如果是直接读取到文件路径并发送,则为Uri.fromFile(new File(filePath));
         如果是从数据库中查循出来的uri,则直接传入即可.

发起市场程序 

Intent intent = new Intent(Intent.ACTION_VIEW,
            Uri.parse("market://details?id=pname:org.rabold.android.puzzleblox"));
            //Uri.parse("market://search?q=pname:org.rabold.android.puzzleblox"));
            startActivity(intent);

调用系统裁剪图片 

Uri photoUri = Uri.fromFile(new File("/mnt/sdcard/ruhua.jpg"));
                Log.i("path", photoUri.toString());
                Intent intent = new Intent("com.android.camera.action.CROP");
                intent.setDataAndType(photoUri, "image/*");
                intent.putExtra("crop", "true");
                intent.putExtra("aspectX", 1);
                intent.putExtra("aspectY", 1);
                intent.putExtra("outputX", 80);
                intent.putExtra("outputY", 80);
                intent.putExtra("output", photoUri);
                intent.putExtra("outputFormat", "JPEG");

实现分享功能 

Intent mIntent = new Intent(Intent.ACTION_SEND);
//根据分享的内容设置不同的mimeType          mIntent.setType("text/plain");
mIntent.putExtra(Intent.EXTRA_TEXT, "下载地址?");
mIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(Intent.createChooser(mIntent, "分享"));

获取图片 

Intent intent = new Intent();
        /* 设置为image */
        intent.setType("image/*");
        /* 使用Intent.ACTION_GET_CONTENT这个Action */
        intent.setAction(Intent.ACTION_GET_CONTENT);
        /* 取得图片后返回本画面 */
        startActivityForResult(intent, 1);