我使用了下面的代码,但没有找到解决方案。
MyReceiver.java:
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;
public class MyReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Log.v("onReceive", "Power button is pressed.");
Toast.makeText(context, "power button clicked", Toast.LENGTH_LONG)
.show();
}
}
和MainActivity.java:
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
和AndroidManifest.xml:
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".MyReceiver">
<intent-filter>
<action android:name="android.intent.action.SCREEN_OFF"></action>
<action android:name="android.intent.action.SCREEN_ON"></action>
<action android:name="android.intent.action.ACTION_POWER_CONNECTED"></action>
<action android:name="android.intent.action.ACTION_POWER_DISCONNECTED"></action>
<action android:name="android.intent.action.ACTION_SHUTDOWN"></action>
</intent-filter>
</receiver>
</application>
但是我在点击 Power Button
时没有收到任何 Toast 消息。请帮助我了解如何获取 PowerButton
点击次数,如果点击次数等于 5,则转到另一个 actvity
。请帮我实现这个目标?
最佳答案
试试这个,
public class MyReceiver extends BroadcastReceiver {
static int countPowerOff=0;
private Activity activity=null;
public MyReceiver (Activity activity)
{
this.activity=activity;
}
@Override
public void onReceive(Context context, Intent intent) {
Log.v("onReceive", "Power button is pressed.");
Toast.makeText(context, "power button clicked", Toast.LENGTH_LONG)
.show();
if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF))
{
countPowerOff++;
}
else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON))
{
if(countPowerOff==5)
{
Intent i =new Intent(activity,NewActivity.class);
activity.startActivity(i);
}
}
}
还有,
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
MyReceiver mReceiver = new MyReceiver (this);
registerReceiver(mReceiver, filter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
关于java - Android - 计算电源按钮点击次数和启动 Activity ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/15609008/