如何检查用户在 android 中使用 Intent 创建的卸载对话框单击了什么?

Question

我正在尝试创建一个能够卸载其他已安装应用程序的应用程序。因此，当我使用卸载意图时，打开的对话框要求确定或取消。那么我如何才能知道用户是选择了"确定"还是"取消"，因为我需要隐藏按下的"卸载"按钮。分配为代码末尾的公共类查看器中存在的按钮

public class Adapter extends RecyclerView.Adapter<Adapter.ViewHolder>  {
MainActivity mainActivity=new MainActivity();
private Context mContext;
List<Drawable> images;
List<String> titles;
List<String> apps;
LayoutInflater inflater;
public void uninstallAPK(String apkPackageName) {
Intent intent = new Intent(Intent.ACTION_DELETE);
intent.setData(Uri.parse("package:" + apkPackageName));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
mContext.startActivity(intent);
}
private void goToUrl (String url) {
Uri uriUrl = Uri.parse(url);
Intent launchBrowser = new Intent(Intent.ACTION_VIEW, uriUrl);
launchBrowser.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
launchBrowser.putExtra(Intent.EXTRA_RETURN_RESULT, true);
mContext.startActivity(launchBrowser);
mainActivity.finish();
}

public Adapter(Context ctx, List<String> titles, List<Drawable> 
images,List<String> apps){
this.titles =titles;
this.images = images;
this.apps = apps;
this.inflater =LayoutInflater.from(ctx);
mContext = ctx;
}

@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int 
viewType) {
View view = inflater.inflate(R.layout.custom_grid_layout,parent,false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull final ViewHolder holder, final int 
position) {
holder.title.setText(titles.get(position));
holder.gridIcon.setImageDrawable(images.get(position));
}
@Override
public int getItemCount() {
return titles.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
ImageView gridIcon;
TextView title;
Button button;
Button button3;
public ViewHolder(@NonNull View itemView) {
super(itemView);
title = itemView.findViewById(R.id.textView);
gridIcon = itemView.findViewById(R.id.imageView2);
button = itemView.findViewById(R.id.button);
button3 = itemView.findViewById(R.id.button3);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
uninstallAPK(apps.get(getAdapterPosition()));
//want to hide the button if ok is pressed otherwise want 
to show the button
}

});
button3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final ParseQuery<ParseObject> linkwa = new 
ParseQuery<ParseObject>("package");
linkwa.whereEqualTo("packid", 
apps.get(getAdapterPosition()));
linkwa.findInBackground(new FindCallback<ParseObject>() {
@Override
public void done(List<ParseObject> objects, 
ParseException e) {
if(e==null && objects.size()>0){
for (ParseObject object:objects){
goToUrl(object.getString("link"));
}
}
}
});
}
});

}
}

}

Answer 1

实际上有解决方法，您可以尝试一下

1. StartActivityFotResult 这将确保你将在 onActivityResult 中获得回调

   public void uninstallAPK(String apkPackageName) {
   Intent intent = new Intent(Intent.ACTION_DELETE);
   intent.setData(Uri.parse("package:" + apkPackageName));
   intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
   intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
   mContext.startActivityForResult(intent, 12345);
   }
   

2. 现在，您可以检查结果代码是否成功RESULT_OK或RESULT_CANCELLED

   @Override
   protected void onActivityResult(int requestCode, int resultCode, Intent data) {
   super.onActivityResult(requestCode, resultCode, data);
   if (requestCode == 1234) {
   if(resultCode == Activity.RESULT_OK){
   //Deleted
   }
   if (resultCode == Activity.RESULT_CANCELED) {
   //Dismissed
   }
   }
   }//onActivityResult
   

2.1.如果上述解决方案不起作用，那么

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1234) {
if (appInstalledOrNot("required_app_package_name")){
// Dismissed
}else { 
//Deleted
}
}
}//onActivityResult

private boolean appInstalledOrNot(String uri) {
PackageManager pm = getPackageManager();
try {
pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
return true;
} catch (PackageManager.NameNotFoundException e) {
}
return false;
}

检查是否安装了应用程序是从这里开始的

Answer 2

真的不知道你的实现方式如何，但理想情况下我会有两个按钮。一个用于取消另一个用于卸载。我会在两个按钮上设置点击监听器。因此，无论何时执行 onclickListener，都意味着用户按下对话框的按钮。所以，第一件事，我会关闭对话框，第二件事基于用户点击的按钮

public void onClick(View v){
if(v.getId == R.id.btn_dialog_uninstall){
uninstallPackage("package_name");
dialog.dissmiss();
}else{
dialog.dissmiss(); // user pressed cancelled;
}

希望有帮助。