Question

我发现了这个post，我试图让这个代码对我有用，但我遇到了问题。

package com.example.converter;

import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.widget.RelativeLayout;

public class Savannah extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_savannah);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_savannah, menu);
        return true;
    }

    public boolean onTouch(View v, MotionEvent event) {

        final int DELAY = 100;

        if(event.getAction() == MotionEvent.ACTION_UP) {


            RelativeLayout savannah = (RelativeLayout) findViewById(R.layout.activity_savannah);

            ColorDrawable f = new ColorDrawable(0xff00ff00);
            ColorDrawable f2 = new ColorDrawable(0xffff0000);
            ColorDrawable f3 = new ColorDrawable(0xff0000ff);
            ColorDrawable f4 = new ColorDrawable(0xff0000ff);

            AnimationDrawable a = new AnimationDrawable();
            a.addFrame(f, DELAY);
            a.addFrame(f2, DELAY);
            a.addFrame(f3, DELAY);
            a.addFrame(f4, DELAY);
            a.setOneShot(false);

            savannah.setBackgroundDrawable(a); // This method is deprecated in API 16
            // savannah.setBackground(a); // Use this method if you're using API 16
            a.start();
         }
         return true;
    }
}

所以这是我的非工作代码，它不会标记错误，但它不会像它应该的那样频闪。有谁能告诉我这有什么不对吗？

12-19 10:43:00.239: D/dalvikvm(15327): GC_EXTERNAL_ALLOC freed 351K, 47% free 3735K/6983K, external 1818K/1848K, paused 43ms
12-19 10:43:00.289: D/dalvikvm(1735): GC_FOR_MALLOC freed 159K, 49% free 3427K/6663K, external 0K/0K, paused 31ms
12-19 10:43:02.139: I/ActivityManager(1109): Starting: Intent { cmp=com.example.converter/.Savannah } from pid 20056
12-19 10:43:02.399: I/ActivityManager(1109): Displayed com.example.converter/.Savannah: +254ms
12-19 10:43:02.709: D/dalvikvm(1735): GC_FOR_MALLOC freed 140K, 49% free 3416K/6663K, external 0K/0K, paused 54ms
12-19 10:43:02.759: D/dalvikvm(1735): GC_FOR_MALLOC freed 145K, 49% free 3419K/6663K, external 0K/0K, paused 17ms
12-19 10:43:05.429: D/dalvikvm(1735): GC_FOR_MALLOC freed 167K, 49% free 3428K/6663K, external 0K/0K, paused 28ms
12-19 10:43:08.589: D/dalvikvm(15327): GC_EXPLICIT freed 113K, 47% free 3728K/6983K, external 1336K/1848K, paused 76ms
12-19 10:43:10.529: D/dalvikvm(1735): GC_FOR_MALLOC freed 160K, 49% free 3428K/6663K, external 0K/0K, paused 32ms
12-19 10:43:12.709: D/dalvikvm(1735): GC_FOR_MALLOC freed 126K, 49% free 3416K/6663K, external 0K/0K, paused 57ms
12-19 10:43:12.749: D/dalvikvm(1735): GC_FOR_MALLOC freed 146K, 49% free 3419K/6663K, external 0K/0K, paused 19ms
12-19 10:43:12.969: I/ActivityManager(1109): Starting: Intent { cmp=com.example.converter/.Savannah } from pid 20056
12-19 10:43:13.209: I/ActivityManager(1109): Displayed com.example.converter/.Savannah: +233ms
12-19 10:43:16.229: D/dalvikvm(1735): GC_FOR_MALLOC freed 165K, 49% free 3426K/6663K, external 0K/0K, paused 50ms
12-19 10:43:21.849: D/dalvikvm(1735): GC_FOR_MALLOC freed 160K, 49% free 3427K/6663K, external 0K/0K, paused 47ms
12-19 10:43:21.879: D/dalvikvm(1735): GC_FOR_MALLOC freed 129K, 49% free 3427K/6663K, external 0K/0K, paused 18ms
12-19 10:43:22.739: D/dalvikvm(1735): GC_FOR_MALLOC freed 156K, 49% free 3419K/6663K, external 0K/0K, paused 35ms

背景频闪代码不起作用

0 个答案: