java - 方法 onHandleIntent() 没有被调用

Question

经过几个小时的研究，我终于咨询了官方帮助。为什么 onHandleIntent() 没有被调用？这里有什么问题吗？

在主要 Activity onCreate() 中:

mService = new Intent(context, xyz.class);
startService(mService);

就是这样。 onStartCommand() 被调用，但 onHandleIntent()

没有被调用

package com.autoalbumwallaperplus;

import android.app.IntentService;
import android.content.Intent;
import android.widget.Toast;

public class xyz extends IntentService {
    public xyz() {
        super("bmp");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Toast.makeText(this,"onStartCommand works!", Toast.LENGTH_SHORT).show();
        return super.onStartCommand(intent,flags,startId);
    }

    @Override
    protected void onHandleIntent(Intent workIntent) {
        Toast.makeText(this,"onHandleIntent works!", Toast.LENGTH_SHORT).show();
    }
}

这是在 OnHandleIntent 中

    String imagepath = workIntent.getStringExtra("String");
    Toast.makeText(this, "it works" , Toast.LENGTH_SHORT).show();
    DisplayMetrics displayMetrics = new DisplayMetrics();
    WindowManager hi = ((WindowManager) getBaseContext().getSystemService(Context.WINDOW_SERVICE));
    int height = displayMetrics.heightPixels;
    int width = displayMetrics.widthPixels << 2;

    // ... First decode with inJustDecodeBounds=true to check dimensions
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    Bitmap decodedSampleBitmap = BitmapFactory.decodeFile(imagepath, options);

    // ... Calculate inSampleSize
    options.inSampleSize = calculateInSampleSize(options, width, height);

    // ... Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;
    decodedSampleBitmap = BitmapFactory.decodeFile(imagepath, options);

    // ... Set Wallpaper
    //Context context = getApplicationContext();
    WallpaperManager wm = WallpaperManager.getInstance(this);

    try {
        wm.setBitmap(decodedSampleBitmap);
    } catch (IOException e) {
    }

Answer 1

可能是您的 Intent 服务未启动，因为您正在覆盖 onStartCommand() 方法，如 android 文档所述:

"You should not override this method(onStartCommand()) for your IntentService. Instead, override onHandleIntent(Intent), which the system calls when the IntentService receives a start request."

希望这对你有帮助