我正在學習BroadCast接收器。我試圖用下面這段代碼實現的是,當我切換到飛行模式時,我希望看到烤麪包,其中應用程序處於開啓狀態。我沒有做什麼/做錯了什麼?請幫忙。由於爲什麼我的BroadCast接收器不工作?
ConnectivityChangedReceiver.java類
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.widget.Toast;
public class ConnectivityChangedReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent)
{
Toast.makeText(context, "Intent Detected.", Toast.LENGTH_LONG).show();
}
}
AndroidManifest.xml中
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<uses-permission android:name="android.permission.SEND_SMS"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".ConnectivityChangedReceiver">
<intent-filter>
<action android:name="android.intent.action.AIRPLANE_MODE">
</action>
</intent-filter>
</receiver>
</application>
MainActivity.java`
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.content.Intent;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private TextView switchStatus;
private Switch mySwitch;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
你想這樣做絲毫這個廣播什麼?開始它在什麼後? –
我切換到飛行模式後,我想看到吐司「意圖檢測」 –
什麼設備我們使用?? –