小编ash*_*h.n的帖子

嗨,我目前正在测试android coverflow 我试图从网址获取图像并显示在封面流程中我已成功下载图像但不能放入位图.这是我试过的代码......

package com.example.coverflow;

import java.io.FileInputStream;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Shader.TileMode;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.Toast;
import android.widget.ImageView.ScaleType;

import com.example.coverflow.CoverAdapterView.OnItemClickListener;

public class CoverFlowExample extends Activity  {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        CoverFlow coverFlow;
        coverFlow = new CoverFlow(this);

        coverFlow.setAdapter(new ImageAdapter(this));

        ImageAdapter …

我试图从视图中的AsyncTask的onPostExecute()(A.xml)mainActivity中膨胀视图(B.xml)(其中有微调器)

MainActivity.class

protected void onPostExecute(String result) {
        LayoutInflater vi = (LayoutInflater) getApplicationContext()
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View v = vi.inflate(R.layout.B, null);
        branded_spinner = (Spinner) v.findViewById(R.id.Spinner01);

        adapter_branded = new ArrayAdapter<String>(**MainActivity.this**,
                android.R.layout.simple_spinner_item, Branded);
        adapter_branded.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        branded_spinner.setAdapter(adapter_branded);                        
        branded_spinner.setOnItemSelectedListener(**MainActivity.this**);

}

它适用于4.0及以上版本

但是对于2.3.3我得到一个错误

11-30 15:28:55.492: E/AndroidRuntime(540): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
11-30 15:28:55.492: E/AndroidRuntime(540):  at android.view.ViewRoot.setView(ViewRoot.java:531)
11-30 15:28:55.492: E/AndroidRuntime(540):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
11-30 15:28:55.492: E/AndroidRuntime(540):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)

是的,我试图使用getApplicationContext(),但这仍然是相同的错误

我提到了

使用getApplication()作为上下文抛出"无法添加窗口 - 令牌null不适用于应用程序"的对话框

Android:ProgressDialog.show()与getApplicationContext崩溃

Android 1.6:"android.view.WindowManager $ BadTokenException:无法添加窗口 - 令牌null不适用于应用程序"

如何在a中显示这样的字符串TextView.

我尝试了很多,但无法找到解决方案.我无法显示基值CHA2DS2-VASc.