Intent 案例

//安装apk 

public void setupAPK(String apkname){
        String fileName = Environment.getExternalStorageDirectory() + "/" + apkname;
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(Uri.fromFile(new File(fileName)), "application/vnd.android.package-archive");
        mService.startActivity(intent);    
    }

//卸载apk

 private void unInstallAPK(String packageName){
        Uri packageURI = Uri.parse(packageName);      
        Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);      
        startActivity(uninstallIntent);
 }

进入联系人页面
 1.Intent intent = new Intent();
 2.intent.setAction(Intent.ACTION_VIEW);
 3.intent.setData(People.CONTENT_URI);
 4.startActivity(intent);

查看指定联系人
1.Uri personUri = ContentUris.withAppendedId(People.CONTENT_URI, info.id);//info.id联系人ID
2.Intent intent = new Intent();
3.intent.setAction(Intent.ACTION_VIEW);
4.intent.setData(personUri);
5.startActivity(intent);

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<uses-permission id="android.permission.CALL_PHONE" />

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

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);

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);

检测当前网络并调用系统设置

ConnectivityManager cManager = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo info = cManager.getActiveNetworkInfo();
        if (info == null || !info.isAvailable()) {
            TextView dialog = new TextView(this);
            dialog.setText(R.string.currentNetFaild);
            new AlertDialog.Builder(this).setTitle(
                    getResources().getString(R.string.dialogTitle)).setView(dialog)
                    .setPositiveButton(getResources().getString(R.string.ok),
                            new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog,
                                        int whichButton) {
                                    startActivityForResult(new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS), 0);//设置完毕会返回当前应用
                                }
                            }).create().show();
        }

    // 飛行模式
    protected void offLine(boolean setAirPlane) {
      Settings.System.putInt(getContentResolver(),
      Settings.System.AIRPLANE_MODE_ON, setAirPlane ? 1 : 0);
      Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
      intent.putExtra("TestCode", "ellic");
      sendBroadcast(intent);
    }