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我想在我们自己的像素上创建一个具有涟漪效果的动态壁纸。第一个问题是 - 如何设置在 iemageview 中选择的壁纸。以及如何在其上产生连锁反应。

导入 java.io.IOException；

import android.app.Activity;
import android.app.WallpaperManager;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Spinner;
import android.widget.Toast;

public class MainActivity extends Activity {


private static int RESULT_LOAD_IMAGE = 1;


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Button b =(Button) findViewById(R.id.settings);

    b.setOnClickListener(new View.OnClickListener() {

        @Override
         public void onClick(View arg0) {
            // TODO Auto-generated method stub
            WallpaperManager myWallpaperManager
            = WallpaperManager.getInstance(getApplicationContext());
            try {
                myWallpaperManager.setResource());
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            }});



    Button buttonLoadImage = (Button) findViewById(R.id.setw);

    buttonLoadImage.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {

            Intent i = new Intent(
                    Intent.ACTION_PICK,
                    android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

            startActivityForResult(i, RESULT_LOAD_IMAGE);
        }
    });
}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
        Uri selectedImage = data.getData();
        String[] filePathColumn = { MediaStore.Images.Media.DATA };

        Cursor cursor = getContentResolver().query(selectedImage,
                filePathColumn, null, null, null);
        cursor.moveToFirst();

        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        String picturePath = cursor.getString(columnIndex);
        cursor.close();

        ImageView imageView = (ImageView) findViewById(R.id.imgView);
        imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));

    }


}

}

4

1 回答 1

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要将图像设置为墙纸，

  1. 将此添加到您的清单文件中

    <uses-permission android:name="android.permission.SET_WALLPAPER"></uses-permission>

  2. 在onClickListener您ListView获取图像的绝对路径并使用以下代码将其设置为墙纸时，

    WallpaperManager wpm = WallpaperManager.getInstance(context); InputStream ins = new URL("absolute/path/of/image").openStream(); wpm.setStream(ins);

于 2013-08-01T07:31:50.030 回答