AndroidのUI - FrameLayout2 - liguofeng29’s blog

MainActivity.java
package com.example.liguofeng.framelayout;

import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;

import java.util.Timer;
import java.util.TimerTask;

public class MainActivity extends AppCompatActivity {
    private int currentColor = 0;

    // 色
    final int[] colors = new int[]{
            R.color.color1,
            R.color.color2,
            R.color.color3,
            R.color.color4,
            R.color.color5,
    };

    final int[] names = new int[]{
            R.id.view01,
            R.id.view02,
            R.id.view03,
            R.id.view04,
            R.id.view05
    };

    TextView[] views = new TextView[names.length];

    // ハンドラー
    Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {if (msg.what == 0x123) {
            for (int i = 0; i < names.length; i++) {
                        // 色変更
                        views[i].setBackgroundResource(colors[(i + currentColor) % names.length]);
                    }

                    currentColor++;
                }
                super.handleMessage(msg);
            }

        };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);

            for (int i = 0; i < names.length; i++) {
                views[i] = (TextView) findViewById(names[i]);
            }

            // タイマー設定
            new Timer().schedule(new TimerTask() {
                @Override
                public void run() {
                    handler.sendEmptyMessage(0x123);
                }
            }, 0,200);
    }
}