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android - 来电屏幕上的 Activity 弹出窗口

转载 作者:塔克拉玛干 更新时间:2023-11-02 20:55:35 27 4
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我正在尝试覆盖来电屏幕 - 我知道我无法更改它,所以我正在尝试在顶部弹出一个 Activity 。

我的代码工作正常,除非手机闲置了几分钟。

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();
}
}

调用.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 - 我尝试等待屏幕在 sleep (700) 之前唤醒,但没有帮助(在 MyPhoneBroadcastReceiver.java 中)

...
try {
if (pm.isScreenOn()) {
sleep(700);
} else {
while (!pm.isScreenOn()) {
// Do nothing...
}
sleep(700);
}
}
...

最佳答案

当手机屏幕关闭且有来电时,有更多工作要做(唤醒、处理键盘锁 View ...),因此通话中的 Activity 需要更长的时间才能显示,这会导致如果您的通话 Activity 开始时间早于通话 Activity 开始时间 --> 通话 Activity 在最前面
没有确切的时间显示通话中的 Activity (您已经尝试过,发现 700 毫秒是不够的)

我的解决方案:继续跟踪调用 Activity 的状态:

  • 如果它仍然在顶部并且用户没有关闭它(或任何条件解雇),只需使用处理程序继续跟踪
  • 如果有任何其他 Activity 转到前台,然后调用 Activity 尝试回到顶部

我的示例 Activity :

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);
}
};
};

}

关于android - 来电屏幕上的 Activity 弹出窗口,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14338526/

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