我试图覆盖来电屏幕 – 我知道我无法改变它所以我试图弹出一个活动ontop.
我的代码工作正常,除非手机闲置几分钟.
我的代码：
AndroidManifest.xml：
<?xml version="1.0" encoding="utf-8" ?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myfirstapp"
android:versionCode="7"
android:versionName="7">
<uses-sdk android:minSdkVersion="7" android:targetSdkVersion="10"></uses-sdk>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE"/>
<uses-permission android:name="android.permission.CALL_PHONE" />
<application android:label="@string/app_name" android:icon="@drawable/ic_launcher">
<receiver android:name=".MyPhoneBroadcastReceiver" android:enabled="true">
<intent-filter android:priority="99999">
<action android:name="android.intent.action.PHONE_STATE" />
</intent-filter>
</receiver>
<activity
android:name=".Call" >
</activity>
</application>
</manifest>
MyPhoneBroadcastReceiver.java：
public class MyPhoneBroadcastReceiver extends BroadcastReceiver{
public void onReceive(final Context context,Intent intent) {
Thread pageTimer = new Thread(){
public void run(){
try{
sleep(700);
} catch (InterruptedException e){
e.printStackTrace();
} finally {
Intent i = new Intent();
i.setClass(context,Call.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
i.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
i.putExtra("INCOMING_NUMBER",incomingNumber);
i.setAction(Intent.ACTION_MAIN);
i.addCategory(Intent.CATEGORY_LAUNCHER);
context.startActivity(i);
}
}
};
pageTimer.start();
}
}
Call.java：
package com.example.myfirstapp;
import android.app.Activity;
import android.os.Bundle;
public class Call extends Activity{
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow(). addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
getWindow().addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
getWindow().addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
setContentView(R.layout.main);
}
}
顺便说一句 – 我试着等待屏幕在睡眠前醒来(700)并没有帮助
(在MyPhoneBroadcastReceiver.java中)
...
try {
if (pm.isScreenOn()) {
sleep(700);
} else {
while (!pm.isScreenOn()) {
// Do nothing...
}
sleep(700);
}
}
...
解决方法
当手机屏幕关闭且有来电时,还有更多工作要做(醒来,处理键盘保护视图……)因此,通话中活动需要更长时间才能显示,这导致了呼叫活动的开始时间早于通话中活动的开始 – >通话活动位于最前面
没有确切的时间需要显示通话中活动(您已经尝试过并看到700毫秒是不够的)
我的解决方案：继续跟踪Call活动的状态：
没有确切的时间需要显示通话中活动(您已经尝试过并看到700毫秒是不够的)
我的解决方案：继续跟踪Call活动的状态：
>如果它仍然在顶部并且用户没有解雇它(或任何条件
解雇),只需使用处理程序进行跟踪
>如果有任何其他活动转到前台,则调用活动
试着回到顶部
我的样本活动：
public class MainActivity extends Activity {
private ActivityManager mActivityManager;
private boolean mDismissed = false;
private static final int MSG_ID_CHECK_TOP_ACTIVITY = 1;
private static final long DELAY_INTERVAL = 100;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
mActivityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
mHandler.sendEmptyMessageDelayed(MSG_ID_CHECK_TOP_ACTIVITY,DELAY_INTERVAL);
}
private Handler mHandler = new Handler() {
public void handleMessage(android.os.Message msg) {
if (msg.what == MSG_ID_CHECK_TOP_ACTIVITY && !mDismissed) {
List<RunningTaskInfo> tasks = mActivityManager
.getRunningTasks(1);
String topActivityName = tasks.get(0).topActivity
.getClassName();
if (!topActivityName.equals(MainActivity.this
.getComponentName().getClassName())) {
// Try to show on top until user dismiss this activity
Intent i = new Intent();
i.setClass(MainActivity.this,MainActivity.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
i.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
startActivity(i);
}
sendEmptyMessageDelayed(MSG_ID_CHECK_TOP_ACTIVITY,DELAY_INTERVAL);
}
};
};
}
