Android提示从gridview保存图像或设置壁纸

Question

我希望用户在单击所选图像后获得该选项，以将图像设置为他们的壁纸或将其保存到他们的 SD 卡中。

这是我第一次这样做，所以我需要一些指导。我查看了与此类似的其他问题，但每个人都使用与我设置显示图像的方法不同的方法。

提前致谢，代码如下：

Displayimagesin的AdapterView：

package com.question;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;

public class AdapterViewADV extends BaseAdapter {
private Context mContext;


public Integer[] mThumbIds = {
    R.drawable.Image1,
    R.drawable.Image2,
    R.drawable.Image3,
    R.drawable.Image4,
    R.drawable.Image5,
    R.drawable.Image6

};


public AdapterViewADV(Context c){
mContext = c;
}

@Override
public int getCount() {
return mThumbIds.length;
}

@Override
public Object getItem(int position) {
return mThumbIds[position];
}

@Override
public long getItemId(int position) {
return 0;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView = null;
if(convertView == null){
   imageView = new ImageView(mContext);imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
   imageView.setLayoutParams(new GridView.LayoutParams(NO_SELECTION, NO_SELECTION));
   convertView = imageView;
}else{
    imageView = (ImageView)convertView;
}
imageView.setImageResource(mThumbIds[position]);

return convertView;


       } 
}

显示图像的类：

package com.question;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.Toast;

public class Displayimagesin extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_battlefield4);

    GridView gridView = (GridView) findViewById(R.id.grid_view);

    // Instance of ImageAdapter Class
    gridView.setAdapter(new AdapterViewADV(this));

    gridView.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View v,
                int position, long id) {

            Toast.makeText(Displayimagesin.this, "Wallpaper set",
                    Toast.LENGTH_SHORT).show();

        }
    });
}

}

Answer 1

通过调用WallpaperManager 设置壁纸。 将您的图片引用到Bitmap。 像这样的

WallpaperManager wm=WallpaperManager.getInstance(this);
wm.setBitmap(bitmap);

并在清单文件中添加权限

android.permission.SET_WALLPAPER

希望对你有帮助。

Answer 2

尝试使用 WallpaperManager 设置壁纸

        WallpaperManager myWallpaperManager=WallpaperManager.getInstance(getApplicationContext());            

            myWallpaperManager.setResource(mThumbIds[curruntPosition]);