android基础教程之夜间模式实现示例

易采站长站为您分析android的夜间模式实现示例,需要的朋友可以参考下    

 

复制代码
package org.david.dayandnightdemo.cor;

 

import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.graphics.Color;
import android.graphics.PixelFormat;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity implements OnClickListener {

    private WindowManager mWindowManager;
    private View myView;
    private Button btn_dayAndnight;
    private SharedPreferences skinSp;
    private final static String DAY = "day";
    private final static String NIGHT = "night";
    private int flage = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mWindowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
        setContentView(R.layout.activity_main);
        init();
    }

    private void init() {
        skinSp = this.getSharedPreferences("skinchange", Context.MODE_PRIVATE);
        btn_dayAndnight = (Button) findViewById(R.id.btn_dayAndnight);
        btn_dayAndnight.setOnClickListener(this);

        String mode = skinSp.getString("skin", "");
        if(mode!=null||!mode.equals("")){
            if(mode.equals(NIGHT)){
                night();