我将MapActivity作为TabActivity中的四个选项卡之一。此MapActivity可以启动一个传奇的PopupWindow。 PopupWindow保留在地图顶部的屏幕上,直到再次点击“显示图例”按钮(来回等)。
问题在于,当用户切换到另一个选项卡时,PopupWindow在视图上保持持久性。
我已经尝试在MapActivity类中实现onPause()方法,并从那里解除它。应用程序将使用此方法关闭。
有任何帮助吗?谢谢!
编辑:这是我的一些代码:在MainActivity中,它建立了四个标签:
Resources res = getResources(); // Resource object to get Drawables
TabHost tabHost = getTabHost(); // The activity TabHost
TabHost.TabSpec spec; // Reusable TabSpec for each tab
Intent intent; // Reusable Intent for each tab
// Create an Intent to launch an Activity for the tab (to be reused)
intent = new Intent().setClass(this, FirstActivity.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("game").setIndicator("First",
res.getDrawable(R.drawable.ic_tab_game))
.setContent(intent);
tabHost.addTab(spec);
// Do the same for the other tabs
intent = new Intent().setClass(this, SecondActivity.class);
spec = tabHost.newTabSpec("alerts").setIndicator("Second",
res.getDrawable(R.drawable.ic_tab_alert))
.setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, MapActivity.class);
spec = tabHost.newTabSpec("map").setIndicator("Map",
res.getDrawable(R.drawable.ic_tab_map))
.setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, LastActivity.class);
spec = tabHost.newTabSpec("experience").setIndicator("Last",
res.getDrawable(R.drawable.ic_tab_experience))
.setContent(intent);
tabHost.addTab(spec);
tabHost.setCurrentTab(0);
现在在我的MapActivity类(扩展MapActivity)中:
// Declare the Legend PopupWindow
mapLegendInflater = (LayoutInflater) MapActivity.this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mapLegendPopupLayout = mapLegendInflater.inflate(
R.layout.maptablegendpopuplayout, null, false);
mapLegendPopup = new PopupWindow(mapLegendPopupLayout,
(int) (0.45 * getApplicationContext().getResources()
.getDisplayMetrics().widthPixels),
(int) (0.33 * getApplicationContext().getResources()
.getDisplayMetrics().heightPixels), true);
mapLegendPopup.setFocusable(false);
mapLegendPopup.setOutsideTouchable(true);
Boolean legendIsShown = false;
mapLegendButton = (Button) findViewById(R.id.buttonMapLegend);
mapLegendButton.setOnClickListener(mapLegendListener);
private OnClickListener mapLegendListener = new OnClickListener() {
public void onClick(View v) {
// Launch or dismiss the map legend popup
if (legendIsShown) {
mapLegendPopup.dismiss();
mapLegendButton.getBackground().clearColorFilter();
legendIsShown = false;
} else {
mapLegendPopup.showAtLocation(
findViewById(R.id.buttonMapLegend), Gravity.TOP
| Gravity.LEFT, 8,
(int) (0.23 * getApplicationContext().getResources()
.getDisplayMetrics().heightPixels));
mapLegendButton.getBackground().setColorFilter(
new LightingColorFilter(0xFFFFFFFF, 0xFFAA0000));
// mapLegendButton.getBackground().setColorFilter(0xFFFFFF00,
// PorterDuff.Mode.MULTIPLY);
legendIsShown = true;
}
}
};
我希望这可以让我知道我在哪里。一切都在Map选项卡上完美运行。只有当您显示图例并切换选项卡时,它才会显示在其他视图中。
答案 0 :(得分:3)
我知道你说实现onPause()并不适合你,但是我尝试了它并在MapActivity中实现onResume()和onPause()对我有用。
我需要在onResume()中执行一个View.post(new Runnable(){...})因为我无法在onResume()期间重新创建popupWindow所以我不得不安排它在之后立即发生:< / p>
package com.esri.android.tabdemo;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.Toast;
public class MapActivity extends Activity
{
private TextView textView = null;
private PopupWindow popupWindow = null;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
textView = new TextView(this);
textView.setText("Hello World from MapActivity");
setContentView(textView);
}
@Override
protected void onPause()
{
super.onPause();
if (popupWindow != null)
{
popupWindow.dismiss();
popupWindow = null;
}
}
@Override
protected void onResume()
{
super.onResume();
final Context context = this;
textView.post(
new Runnable()
{
public void run()
{
popupWindow = new PopupWindow(context);
LinearLayout linearLayout = new LinearLayout(context);
linearLayout.setOrientation(LinearLayout.VERTICAL);
Button button = new Button(context);
button.setText("Hello");
button.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
Toast.makeText(context, "Hello", Toast.LENGTH_SHORT).show();
}
});
linearLayout.addView(button);
popupWindow.setContentView(linearLayout);
popupWindow.showAtLocation(linearLayout, Gravity.LEFT | Gravity.BOTTOM, 10, 10);
popupWindow.update(256, 64);
}
}
);
}
}
答案 1 :(得分:2)
你可以像这样初始化你的popupwindown:
mapLegendPopup = new PopupWindow(this);
mapLegendPopup.setContentView (itemizeView);
mapLegendPopup.setBackgroundDrawable (new BitmapDrawable()); // key is here
mapLegendPopup.setWidth ((int) (0.45 * getApplicationContext().getResources()
.getDisplayMetrics().widthPixels));
mapLegendPopup.setHeight((int) (0.33 * getApplicationContext().getResources()
.getDisplayMetrics().heightPixels));
mapLegendPopup.setFocusable(false);
mapLegendPopup.setOutsideTouchable(true);
答案 2 :(得分:1)
您应按照建议的by the framework使用onCreateDialog()方法管理对话框。
这样你的Dialog就会成为你活动的一部分,它会自己完成。
如果你真的不想使用它(我看不出任何原因,但仍然如此),你可以使用Dialog上的setOwnerActivity()将它分配给你的Activity。 / p>