我试图在来电屏幕上添加弹出窗口，就像真实的通话者一样，但是未能实现。请告诉我背后的逻辑以及如何实现它。
public void onReceive(Context context, Intent intent) {
try {
// TELEPHONY MANAGER class object to register one listner
TelephonyManager tmgr = (TelephonyManager) context
.getSystemService(Context.TELEPHONY_SERVICE);
}
} catch (Exception e) {
Log.e("Phone Receive Error", " " + e);
}
}
我已经为我的应用程序使用了以下方法，在其中我想要在拨号器应用程序启动时显示一个视图（类似于Truecaller中的那样）。为此，请创建一个广播接收器，它可以接受如下所述的各种设备事件。
广播接收器：
private WindowManager wm;
private static LinearLayout ly1;
private WindowManager.LayoutParams params1;
// onReceive function of the Broadcast Receiver
public void onReceive(Context arg0, Intent arg1) {
String state = arg1.getStringExtra(TelephonyManager.EXTRA_STATE);
// Adds a view on top of the dialer app when it launches.
if(state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)){
wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
params1 = new WindowManager.LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.TYPE_SYSTEM_ALERT |
WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSPARENT);
params1.height = 75;
params1.width = 512;
params1.x = 265;
params1.y = 400;
params1.format = PixelFormat.TRANSLUCENT;
ly1 = new LinearLayout(context);
ly1.setBackgroundColor(Color.BLACK);
ly1.setOrientation(LinearLayout.VERTICAL);
wm.addView(ly1, params1);
}
// To remove the view once the dialer app is closed.
if(arg1.getAction().equals("android.intent.action.PHONE_STATE")){
String state = arg1.getStringExtra(TelephonyManager.EXTRA_STATE);
if(state.equals(TelephonyManager.EXTRA_STATE_IDLE)){
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
if(ly1!=null)
{
wm.removeView(ly1);
ly1 = null;
}
}
}
}
注意: 上述示例生成了一个具有黑色背景和上文所示尺寸的布局视图。您可以在此视图中添加任何布局，例如：要在视图中包含布局，您可以修改上面的代码以包含以下内容：
ly1 = new LinearLayout(getApplicationContext());
ly1.setOrientation(LinearLayout.HORIZONTAL);
View hiddenInfo = getLayoutInflater().inflate(R.layout.layout1, ly1, false);
ly1.addView(hiddenInfo);
wm.addView(ly1, params1);
PS : Layout1是一种布局，您需要在布局文件夹中创建它并在此处引用它。
此外 ，您需要在清单中包括以下权限。
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"></uses-permission>
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />
<action android:name="android.intent.action.PHONE_STATE" /> (within intent filter of Broadcast Receiver)
试试这个
AlertDialog.Builder builder = new AlertDialog.Builder(context.getApplicationContext());
LayoutInflater inflater = LayoutInflater.from(context);
View dialogView = inflater.inflate(R.layout.caller_dialog, null);
ImageView button = dialogView.findViewById(R.id.close_btn);
builder.setView(dialogView);
final AlertDialog alert = builder.create();
alert.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
alert.getWindow().setType(WindowManager.LayoutParams.TYPE_PHONE);
alert.setCanceledOnTouchOutside(true);
alert.show();
WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
Window window = alert.getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
window.clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
window.setGravity(Gravity.TOP);
lp.copyFrom(window.getAttributes());
//This makes the dialog take up the full width
lp.width = WindowManager.LayoutParams.MATCH_PARENT;
lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
window.setAttributes(lp);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//close the service and remove the from from the window
alert.dismiss();
}
});
在您的onCreate()中添加权限检查。
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(getActivity())) {
//If the draw over permission is not available open the settings screen
//to grant the permission.
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:" + getActivity().getPackageName()));
startActivityForResult(intent, CODE_DRAW_OVER_OTHER_APP_PERMISSION);
}
并且是在onActivityResult()中
private static final int CODE_DRAW_OVER_OTHER_APP_PERMISSION = 2084;
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CODE_DRAW_OVER_OTHER_APP_PERMISSION) {
//Check if the permission is granted or not.
if (resultCode == RESULT_OK) {
}
else
{
// Permission is not available
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
<uses-permission android:name="android.permission.ACTION_MANAGE_OVERLAY_PERMISSION" />