android 屏幕测试程序 测试R G B三色 和 全黑, 全白5种状态

1.布局文件：activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

<TextView

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:gravity="center"

android:id="@+id/myText"/>

</RelativeLayout>

2.Activity视图文件:

package com.wh.lcdtest;

import android.app.Activity;

import android.graphics.Color;

import android.os.Bundle;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.ImageButton;

import android.widget.TextView;

/**

* @author wh

* @Date 2012-08-07

* @version V0.0

*/

public class MainActivity extends Activity implements OnClickListener{

TextView myTextView;

int flag;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

myTextView = (TextView) findViewById(R.id.myText);

myTextView.setText("欢迎使用屏幕测试程序！！请点击屏幕开始测试！！");

myTextView.setTextColor(Color.WHITE);

myTextView.setOnClickListener(this);

flag=1;

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

getMenuInflater().inflate(R.menu.activity_main, menu);

return true;

}

public void onClick(View view){

String mStr="LCD TEST!!";

System.out.println(mStr);

myTextView.setText("");

flag = flag%5;

switch(flag)

{

case 0:

myTextView.setBackgroundColor(Color.WHITE); break;

case 1:

myTextView.setBackgroundColor(Color.RED); break;

case 2:

myTextView.setBackgroundColor(Color.GREEN); break;

case 3:

myTextView.setBackgroundColor(Color.BLUE); break;

case 4:

myTextView.setBackgroundColor(Color.BLACK); break;

}

flag++;

}

}

3.运行效果：





4.源代码链接：http://download.csdn.net/detail/feihuiwu123/4483628