android ComponentName 示例
16lz
2021-01-23
public class MainActivity extends Activity {private NetworkReceiver connectionReceiver = null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);// 连接性管理 android.net// 动态注册 广播接收器IntentFilter intentFilter = new IntentFilter();intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);connectionReceiver = new NetworkReceiver();registerReceiver(connectionReceiver, intentFilter);//if (connectionReceiver.isConnected()) {} else {runOnUiThread(new Runnable() {@Overridepublic void run() {AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setIcon(R.drawable.ic_launcher);builder.setTitle("网络错误");builder.setMessage("你确定要去设置网络么 ?");builder.setPositiveButton("不了", null);builder.setNegativeButton("确定",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog,int which) {Intent intent = null;try {String sdkVersion = android.os.Build.VERSION.SDK;if (Integer.valueOf(sdkVersion) > 10) {intent = new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);} else {intent = new Intent();//组件名称，第一个参数是包名，也是主配置文件Manifest里设置好的包名 //第二个参数 是全类名ComponentName comp = new ComponentName("com.android.settings","com.android.settings.WirelessSettings");intent.setComponent(comp);intent.setAction("android.intent.action.VIEW");}MainActivity.this.startActivity(intent);} catch (Exception e) {Log.w("TAG","open network settings failed, please check...");e.printStackTrace();}}});builder.show();}});}} @Overrideprotected void onDestroy() {Log.d("TAG", "onDestroy");if (connectionReceiver != null) {unregisterReceiver(connectionReceiver);Log.d("TAG", "unregisterReceiver Success!");}} 
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