Android:在通话期间显示通知? [英] Android: Presenting a notification during a call?
问题描述
我有一个广播接收器，可以监听来电.我想调整来电屏幕.现在我可以展示敬酒并向通知栏添加通知(顺便说一句，在接听电话之前，用户无法将其拉下来，因为屏幕被锁定，这有点糟糕).我试图显示警报但它崩溃了 - 不允许吗?有没有办法让广播接收器中的代码做其他事情，比如改变呼叫者的头像或给它一个名字(即使它不存在于联系人中).假设我的广播接收器拦截了一个呼叫 - 它可以将电话号码和自定义头像添加到联系人中，以便它们立即显示在呼叫屏幕中吗?
I have a broadcast receiver that listens to incoming calls. And I want to tweak the incoming call screen. Right now I can present toasts and add notifications to the notification bar (BTW the user can't pull it down because the screen is locked, before accepting the call, which kinda sucks). I tried to show an alert but it crashed - is it not allowed? Is there a way for the code in the broadcast receiver to do other things, like change the avatar of the caller or give it a name (even if it doesn't exist in the contacts). Let's just say my broadcast receiver intercepts a call - can it add the phone number and a custom avatar to the contacts, so that they will immediately be presented in the call screen?
你怎么看?
编辑
我已经测试了供应商的代码，并且它有效，但是从后台线程更改 UI 并不安全，因此我尝试稍微调整他的代码以使其线程安全，但是对于某些人来说，toast 没有出现原因.你怎么认为?
I have tested vendor's code, and it worked, but it is not safe to change the UI from a background thread, so I tried to tweak his code a bit to make it thread safe but the toast doesn't appear for some reason. What do you think?
private Handler handler = new Handler();
private void showToast() {
Thread thread = new Thread(null, doBackgroundThreadProcessing, "Background");
thread.start();
}
private Runnable doBackgroundThreadProcessing = new Runnable() {
public void run() {
backgroundThreadProcessing();
}
};
private void backgroundThreadProcessing() {
handler.post(new Runnable() {
public void run() {
int count = 0;
try{
while (count < 10) {
toast.show();
Thread.sleep(1850);
count++;
}
}
catch(Exception e){
Log.e("LongToast", "", e);
}
}
});
}
推荐答案
你需要一个这样的 BroadcastReceiver:
You need a BroadcastReceiver like that:
public class IncomingBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
MyLog.d("IncomingBroadcastReceiver: onReceive: ");
String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
MyLog.d("IncomingBroadcastReceiver: onReceive: " + state);
if (state.equals(TelephonyManager.EXTRA_STATE_RINGING))
{
Intent i = new Intent(context, IncomingCallActivity.class);
i.putExtras(intent);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
}
}
并在清单中将其注册到
And register it in the manifest to <action android:name="android.intent.action.PHONE_STATE"></action>.
然后创建一个这样的活动:
Then create an Activity like that:
public class IncomingCallActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
MyLog.d("IncomingCallActivity: onCreate: ");
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL);
setContentView(R.layout.main);
String number = getIntent().getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
TextView text = (TextView)findViewById(R.id.text);
text.setText("Incoming call from " + number);
}
}
具有以下布局:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/text"
android:layout_width="match_parent" android:layout_height="match_parent"
android:gravity="center_vertical|center_horizontal"
android:text="text"
android:windowBackground="@android:color/transparent"
android:windowIsTranslucent="true"
android:windowAnimationStyle="@android:style/Animation.Translucent"></TextView>
这将在来电屏幕顶部产生一个半透明的类似对话的活动，允许用户接听电话(不干扰触摸事件).
This will produce a translucent dialog-like activity on top of the incoming call screen, that allows the user to answer the call (doesn't interfere with touch events).
这篇关于Android:在通话期间显示通知?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
