如何从毕加索库加载图像并将其设置为墙纸

Question

我从网上收到一张毕加索图书馆的照片。然后我把它设置在墙纸上。但是在我的手机上运行之后，我接近了原力。如果您在编码时犯了错误，请帮助我，或者如果有工作建议请提供。

  Bitmap result= null;
    try {
        result = Picasso.with(getApplicationContext())
                .load("http://wallpaperswide.com/download/the_amazing_spider_man_2012_film-wallpaper-1600x900.jpg")
                .get();
    } catch (IOException e) {
        e.printStackTrace();
    }

    WallpaperManager wallpaperManager = WallpaperManager.getInstance(getApplicationContext());
    try {
        wallpaperManager.setBitmap(result);
    } catch (IOException ex) {
        ex.printStackTrace();
    }

Answer 1

假设您在 MainActivity 中：

package com.example.myapplication;

import android.app.WallpaperManager;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;

import com.squareup.picasso.Picasso;
import com.squareup.picasso.Target;

import java.io.IOException;

public class MainActivity extends AppCompatActivity {

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

        Picasso.with(this).load("http://wallpaperswide.com/download/the_amazing_spider_man_2012_film-wallpaper-1600x900.jpg").into(new Target(){

            @Override
            public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                WallpaperManager wallpaperManager = WallpaperManager.getInstance(MainActivity.this);
                try {
                    wallpaperManager.setBitmap(bitmap);
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
                Log.d("TAG", "onBitmapLoaded: ");
                Toast.makeText(MainActivity.this, "Wallpaper Changed", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onBitmapFailed(final Drawable errorDrawable) {
                Log.d("TAG", "FAILED");
                Toast.makeText(MainActivity.this, "Loading image failed", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onPrepareLoad(final Drawable placeHolderDrawable) {
                Log.d("TAG", "Prepare Load");
                Toast.makeText(MainActivity.this, "Downloading image", Toast.LENGTH_SHORT).show();
            }
        });

    }

}

确保：

您使用此导入 import com.squareup.picasso.Target; 而不是 import java.lang.annotation.Target;
您在 AndroidManifest.xml 中授予 INTERNET 权限和 SET_WALLPAPER 权限。 <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.SET_WALLPAPER" />

最后：等待图像下载，然后检查您的设备主屏幕，瞧！！！

如何从毕加索库加载图像并将其设置为墙纸

How to load image from Picasso library and set it as wallpaper

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