造成帧背景图像跳过

Question

我那里有一个TextView一个非常简单的应用程序和Button内RelativeLayout的（与背景图像）：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" 
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity" 
    android:background="@drawable/background_image" > 

    <!-- text in top left of background --> 
    <TextView android:text="App" android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 

    <!-- primary button that outputs audio --> 
    <Button 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Text 
     android:layout_centerVertical="true" 
     android:layout_centerHorizontal="true" 
     android:onClick="trueButtonClick" /> 

</RelativeLayout> 

的onClick事件只是播放一些音频：

public void trueButtonClick(View v) { 
    //create media player 
    MediaPlayer mp = MediaPlayer.create(this, R.raw.audio_test); 
    //make noise 
    mp.start(); 
} 

在logcat中，我得到的消息：

03-02 23:41:40.063 1910-1910/com.example.mohammad.trueapp E/MediaPlayer﹕ Should have subtitle controller already set 
03-02 23:41:40.063 1910-1910/com.example.mohammad.trueapp I/Choreographer﹕ Skipped 210 frames! The application may be doing too much work on its main thread. 
03-02 23:41:43.961 1910-1910/com.example.mohammad.trueapp I/Choreographer﹕ Skipped 232 frames! The application may be doing too much work on its main thread. 
03-02 23:45:05.506 1910-1910/com.example.mohammad.trueapp I/Choreographer﹕ Skipped 115 frames! The application may be doing too much work on its main thread. 
03-02 23:45:07.279 1910-1910/com.example.mohammad.trueapp E/MediaPlayer﹕ Should have subtitle controller already set 
03-02 23:45:07.323 1910-1910/com.example.mohammad.trueapp I/Choreographer﹕ Skipped 108 frames! The application may be doing too much work on its main thread. 
03-02 23:45:10.490 1910-1910/com.example.mohammad.trueapp E/MediaPlayer﹕ Should have subtitle controller already set 

当我删除背景图像@drawable/background_image时，应用程序加速。但是，在添加背景图像之后，应用程序非常缓慢，从用户的角度来看似乎很糟糕。背景图像大小为1040x851。有没有一种方法可以加快速度以防止严重滞后？

Answer 1

发生这种情况是因为您正在加载大尺寸图像。尝试优化它的分辨率。

1px的= 4字节的内存

通过这个你可以来了解你的应用程序有多少获得对存储器