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android ComponentName 示范

热度:481   发布时间:2016-04-28 01:35:05.0
android ComponentName 示例
public class MainActivity extends Activity {	private NetworkReceiver connectionReceiver = null;	@Override	protected 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() {				@Override				public 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() {						@Override						public 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();				}			});		}	}

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@Override	protected void onDestroy() {		Log.d("TAG", "onDestroy");		if (connectionReceiver != null) {			unregisterReceiver(connectionReceiver);			Log.d("TAG", "unregisterReceiver Success!");		}	}

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