我在一个应用程序中实现了弹出窗口。我的示例代码为This。如果我在我的活动中实现此代码而不是工作。所以我找不到我的错误。任何人都可以帮助我。
Unlock_hud.java:
inf = (LayoutInflater) getApplicationContext().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
myview = inf.inflate(R.layout.unlock_launcher, null);
receive = (Button) myview.findViewById(R.id.receive1);
reject = (Button) myview.findViewById(R.id.reject12);
slidehandlebutton= (Button) myview.findViewById(R.id.slidehandlebutton);
slidehandlebutton.setOnClickListener(this);
Handler ha = new Handler();
ha.postDelayed(new Runnable() {
@Override
public void run() {
ActivityManager mActivityManager = (ActivityManager) getSystemService("activity");
List<RunningTaskInfo> list_running = mActivityManager
.getRunningTasks(2147483647);
List<RecentTaskInfo> list_recent = mActivityManager
.getRecentTasks(2147483647, 1);
Log.d("main", "Running: " + list_running.get(0).topActivity);
Log.d("main", "Recent: " + list_recent.get(0).baseIntent);
/* Intent homeIntent = new Intent(Intent.ACTION_MAIN);
homeIntent.addCategory(Intent.CATEGORY_HOME);
homeIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP);
startActivity(homeIntent);*/
// Log.d("main", "Free Memory: " + getUsedMemorySize());
prefs = PreferenceManager
.getDefaultSharedPreferences(getApplicationContext());
}
}, 500)
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d("main", "Ondestroy");
// lock.reenableKeyguard();
if (!call_flag && wm2 != null) {
if (receive_flag) {
if (isaddView) {
wm2.removeView(myview);
}
} else {
wm2.removeView(new_view);
}
edit.putBoolean("flag", false);
edit.commit();
call_flag = true;
if (CheckMissCall.bmp != null) {
CheckMissCall.bmp.recycle();
CheckMissCall.bmp = null;
}
}
}
@Override
public void onClick(View arg0) {
switch (arg0.getId()) {
case R.id.slidehandlebutton:
if (p != null)
showPopup(Unlock_hud.this, p);
break;
}
}
public void onWindowFocusChanged(boolean hasFocus) {
int[] location = new int[2];
Button button = (Button)myview. findViewById(R.id.slidehandlebutton);
// Get the x, y location and store it in the location[] array
// location[0] = x, location[1] = y.
button.getLocationOnScreen(location);
//Initialize the Point with x, and y positions
p = new Point();
p.x = location[0];
p.y = location[1];
}
private void showPopup(Context context, Point p2) {
// TODO Auto-generated method stub
int popupWidth = 180;
int popupHeight = 80;
// Inflate the popup_layout.xml
LinearLayout viewGroup = (LinearLayout) ((Activity) context).findViewById(R.id.popup);
LayoutInflater layoutInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = layoutInflater.inflate(R.layout.popup_layout, viewGroup);
// Creating the PopupWindow
final PopupWindow popup = new PopupWindow(c);
popup.setWidth(popupWidth);
popup.setHeight(popupHeight);
popup.setFocusable(true);
// Some offset to align the popup a bit to the right, and a bit down, relative to button's position.
int OFFSET_X =-200;
int OFFSET_Y =20;
// Clear the default translucent background
popup.setBackgroundDrawable(new BitmapDrawable());
// Displaying the popup at the specified location, + offsets.
popup.showAtLocation(layout, Gravity.NO_GRAVITY, p.x + OFFSET_X, p.y + OFFSET_Y);
// Getting a reference to Close button, and close the popup when clicked.
Button close = (Button) layout.findViewById(R.id.stop);
close.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
popup.dismiss();
}
});
}
现在我发现错误在(上下文)
LinearLayout viewGroup = (LinearLayout) context.findViewById(R.id.popup);
LayoutInflater layoutInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
答案 0 :(得分:0)
我已经使用了你的代码。但似乎没问题。
Activity
public class TestPopupActivity extends Activity implements OnClickListener {
//The "x" and "y" position of the "Show Button" on screen.
Point p;
private LinearLayout holder;
private LayoutInflater inflater;
private View myView;
private Button btn_show;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
holder = (LinearLayout) findViewById(R.id.holder);
inflater = (LayoutInflater) getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
myView = inflater.inflate(R.layout.inflated_layout, null);
btn_show = (Button) myView.findViewById(R.id.show_popup);
btn_show.setOnClickListener(this);
holder.addView(myView);
}
// Get the x and y position after the button is draw on screen
// (It's important to note that we can't get the position in the onCreate(),
// because at that stage most probably the view isn't drawn yet, so it will return (0, 0))
@Override
public void onWindowFocusChanged(boolean hasFocus) {
int[] location = new int[2];
/* Button button = (Button) myView.findViewById(R.id.show_popup);*/
// Get the x, y location and store it in the location[] array
// location[0] = x, location[1] = y.
btn_show.getLocationOnScreen(location);
//Initialize the Point with x, and y positions
p = new Point();
p.x = location[0];
p.y = location[1];
}
// The method that displays the popup.
private void showPopup(Activity context, Point p) {
int popupWidth = 200;
int popupHeight = 150;
// Inflate the popup_layout.xml
LinearLayout viewGroup = (LinearLayout) context.findViewById(R.id.popup);
LayoutInflater layoutInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = layoutInflater.inflate(R.layout.popup_layout, viewGroup);
// Creating the PopupWindow
final PopupWindow popup = new PopupWindow(context);
popup.setContentView(layout);
popup.setWidth(popupWidth);
popup.setHeight(popupHeight);
popup.setFocusable(true);
// Some offset to align the popup a bit to the right, and a bit down, relative to button's position.
int OFFSET_X = 30;
int OFFSET_Y = 30;
// Clear the default translucent background
popup.setBackgroundDrawable(new BitmapDrawable());
// Displaying the popup at the specified location, + offsets.
popup.showAtLocation(layout, Gravity.NO_GRAVITY, p.x + OFFSET_X, p.y + OFFSET_Y);
// Getting a reference to Close button, and close the popup when clicked.
Button close = (Button) layout.findViewById(R.id.close);
close.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
popup.dismiss();
}
});
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.show_popup:
if (p != null)
showPopup(TestPopupActivity.this, p);
break;
default:
break;
}
}
}
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