方法onHandleIntent（）不会被调用 [英] Method onHandleIntent() does not get called

问题描述

几个小时的研究后，我终于咨询官方帮助。为什么不 onHandleIntent（）被调用？是不是有什么错在这里？

在主要活动的onCreate（）：

  MSERVICE =新的意图（背景下，xyz.class）;
startService（MSERVICE）;
 

这是国际空间站的。该 onStartCommand（）被调用，而不是 onHandleIntent（）

 包com.autoalbumwallaperplus;

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

公共类XYZ扩展IntentService {
    公共XYZ（）{
        超级（BMP）;
    }

    @覆盖
    公众诠释onStartCommand（意向意图，诠释标志，诠释startId）{
        Toast.makeText（这一点，onStartCommand的作品！，Toast.LENGTH_SHORT）.show（）;
        返回super.onStartCommand（意向，标志，startId）;
    }

    @覆盖
    保护无效onHandleIntent（意向workIntent）{
        Toast.makeText（这一点，！onHandleIntent作品，Toast.LENGTH_SHORT）.show（）;
    }
}
 

这是OnHandleIntent里面

 字符串的ImagePath = workIntent.getStringExtra（字符串）;
    Toast.makeText（这一点，它的工作原理，Toast.LENGTH_SHORT）.show（）;
    DisplayMetrics displayMetrics =新DisplayMetrics（）;
    窗口管理器，HI =（（窗口管理器）getBaseContext（）getSystemService（Context.WINDOW_SERVICE）。）;
    INT高= displayMetrics.heightPixels;
    INT宽度= displayMetrics.widthPixels＆LT;＆LT; 2;

    // ...首先去code与inJustDe codeBounds = true来检查尺寸
    最后BitmapFactory.Options选项=新BitmapFactory.Options（）;
    options.inJustDe codeBounds = TRUE;
    位图德codedSampleBitmap = BitmapFactory.de codeFILE（的ImagePath，期权）;

    // ...计算inSampleSize
    options.inSampleSize = calculateInSampleSize（选项，宽，高）;

    与inSampleSize集// ...德code位图
    options.inJustDe codeBounds = FALSE;
    德codedSampleBitmap = BitmapFactory.de codeFILE（的ImagePath，期权）;

    // ... 设置壁纸
    //上下文语境= getApplicationContext（）;
    WallpaperManager WM = WallpaperManager.getInstance（本）;

    尝试 {
        wm.setBitmap（德codedSampleBitmap）;
    }赶上（IOException异常E）{
    }
 

解决方案

可能是你的意图服务没有启动，因为你是覆盖 onStartCommand（）方法的android文档说：

  

你不应该重写此方法（onStartCommand（））为您   IntentService。相反，覆盖 onHandleIntent（意向），其中，   当IntentService接收到启动请求系统调用。

希望如此，这将帮助你。

After many hours of researching I am finally consulting official help. Why does not onHandleIntent() get called? Is there something wrong here?

In main activity onCreate():

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

That iss it. The onStartCommand() gets called, but not 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();
    }
}

This is inside the OnHandleIntent

    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) {
    }

解决方案

May be your intent service isn't starting because you are overriding onStartCommand() method as android documentation says:

"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."

Hope so this will help you

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