[android随笔]Activity数据通信

1.无参数Activity跳转

1. <span style="white-space:pre">	</span>Intent it = new Intent(Activity.Main.this, Activity2.class);
   <span style="white-space:pre">	</span>startActivity(it);

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

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

对于数据的获取可以采用：

1. <span style="white-space:pre">	</span>Bundle bundle=getIntent().getExtras();
   <span style="white-space:pre">	</span>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）

1. <span style="white-space:pre">	</span>Intent intent=getIntent();
   <span style="white-space:pre">	</span>Bundle bundle2=new Bundle();
   <span style="white-space:pre">	</span>bundle2.putString("name", "This is from ShowMsg!");
   <span style="white-space:pre">	</span>intent.putExtras(bundle2);
   <span style="white-space:pre">	</span>setResult(RESULT_OK, intent);

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

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

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. 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. 1. Uri uri = Uri.parse("geo:38.899533,-77.036476");
   2. Intent it = new Intent(Intent.ACTION_VIEW, uri);
   3. startActivity(it);

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

路径规划

1. 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. 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. 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. 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

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