java - 如何检查用户在android中使用intent创建的卸载对话框点击了什么？

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选择了确定还是取消，因为我需要隐藏按下的卸载按钮。在代码末尾分配为公共类视图中的按钮

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"));
                            }
                        }
                    }
                });
            }
        });



    }
}

}

标签： javaandroidandroid-studiodialoguninstallation

Answer 1

实际上有一种解决方法，您可以尝试一下

1. StartActivityFotResult 这将确保您将在 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. RESULT_OK现在您可以检查结果代码是否成功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;
    }

PS。从这里检查是否安装了应用程序