Android怎么从设置相册中的照片作背景（刚做的例子）

package com.fit.background;

import java.io.IOException;

import android.app.Activity;
import android.app.WallpaperManager;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {
/** Called when the activity is first created. */
String path;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

Button choose=(Button) findViewById(R.id.choose);
choose.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
Intent i=new Intent();
i.setType("image/*");
i.setAction(Intent.ACTION_GET_CONTENT);
Intent intent=Intent.createChooser(i, "Select Picture");
startActivityForResult(intent, 2);
}
});
// Bitmap bit=BitmapFactory.decodeFile(Environment.getExternalStorageDirectory()+"/xiaoxiong.jpg");
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch(requestCode){
case 2:
Uri imageUri = null;
if(data!=null){
imageUri=data.getData();

String imagePath="";
String[] projection={MediaStore.Images.Media.DATA};
Cursor cursor=managedQuery(imageUri, projection, null, null, null);
if(cursor!=null){
int colomn_index=cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
imagePath=cursor.getString(colomn_index);
}
Bitmap bit=BitmapFactory.decodeFile(imagePath);
try {
WallpaperManager manager=WallpaperManager.getInstance(this);
manager.setBitmap(bit);
} catch (IOException e) {
e.printStackTrace();
}

}
Toast.makeText(MainActivity.this, path, Toast.LENGTH_LONG).show();
break;
}
}
}

更多相关文章

随机推荐