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Google Android .net Blog F#

四、Intent用法实例（转自中移动开发社区）

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:0800000123");
   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:0800000123");
   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:xxx@abc.com");
   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, "me@abc.com");
   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={"me@abc.com"};
   3. String[] ccs={"you@abc.com"};
   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"));

   1. //传送附件
   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/mysong.mp3");
   5. sendIntent.setType("audio/mp3");
   6. 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
1.        //寻找某个应用
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
1.        //显示某个应用的相关信息
2.        Uri uri = Uri.parse("market://details?id=app_id");
3.        Intent it = new Intent(Intent.ACTION_VIEW, uri);
4.        startActivity(it);
5.        //where app_id is the application ID, find the ID
6.        //by clicking on your application on Market home
7.        //page, and notice the ID from the address bar
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);

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本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/zwen1573/archive/2010/06/20/5682249.aspx

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