方法onHandleIntent（）不會被調用

Question

經過幾個小時的研究，我終於咨詢了官方的幫助。 為什么不調用onHandleIntent() ？ 這里有什么問題嗎？

在主要活動onCreate() ：

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

發布它。 調用onStartCommand() ，但不onHandleIntent()

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();
    }
}

這是在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

可能是你的意圖服務沒有啟動，因為你正在重寫onStartCommand()方法，因為android文檔說：

“你不應該為(onStartCommand())覆蓋這個方法(onStartCommand()) 。而是覆蓋onHandleIntent(Intent) ，系統在IntentService收到啟動請求時調用它。”

希望這對你有所幫助