setBackgroundColor在安卓 [英] setBackgroundColor in android

问题描述

在这个简单的游戏我想改变我preSS按钮的背景颜色。但我得到以下结果，按键外观变得不好（形状变得不同）：

  pressedButton.setBackgroundColor（Color.RED）;
 

有没有一种更好的方式来做到这一点？谢谢你。

 包com.example.xo_game;

进口android.os.Bundle;
进口android.app.Activity;
进口android.graphics.Color;
进口android.view.Menu;
进口android.view.View;
进口android.widget.Button;

公共类MainActivity延伸活动{

    按钮[] btns;
    的char [] []游戏状态=新的char [3] [3];
    烧焦转=X;

    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.activity_main）;

        按钮[] btns =新按钮[9];

        btns [0] =（按钮）findViewById（R.id.btn1）;
        btns [1] =（按钮）findViewById（R.id.btn2）;
        btns [2] =（按钮）findViewById（R.id.btn3）;

        btns [3] =（按钮）findViewById（R.id.btn4）;
        btns [4] =（按钮）findViewById（R.id.btn5）;
        btns [5] =（按钮）findViewById（R.id.btn6）;

        btns [6] =（按钮）findViewById（R.id.btn7）;
        btns [7] =（按钮）findViewById（R.id.btn8）;
        btns [8] =（按钮）findViewById（R.id.btn9）;

        的for（int i = 0; I＆LT; 9;我++）{
            btns [I] .setTag（ⅰ）;
            btns [I] .setOnClickListener（clickListener）;
            游戏状态[I / 3] [我％3] ='E';
        }
    }

    View.OnClickListener clickListener =新View.OnClickListener（）{

        公共无效的onClick（视图v）{
            按钮pressedButton =（按钮）V;

            INT的indexOf pressedButton =的Integer.parseInt（pressedButton.getTag（）
                    的ToString（））;

            INT行=的indexOf pressedButton / 3;
            INT COL =的indexOf pressedButton％3;

            如果（游戏状态[行] [山口]！='E'）
                返回;

            游戏状态[行] [COL] =转;

            字符串turnAsString =将String.valueOf（转）;

            pressedButton.setText（turnAsString）;

            如果（置于=='X'）{
                pressedButton.setBackgroundColor（Color.RED）;
                转='O';
            } 其他 {
                pressedButton.setBackgroundColor（Color.GREEN）;
                转=X;
            }
        }
    };

    @覆盖
    公共布尔onCreateOptionsMenu（功能菜单）{
        。getMenuInflater（）膨胀（R.menu.activity_main，菜单）;
        返回true;
    }
}
 

解决方案

  pressedButton.getBackground（）setColorFilter（Color.RED，PorterDuff.Mode.MULTIPLY）。
 

In this simple game I want to change the background color of the button that I press. But I get the following result, the buttons appearance becomes not good (the shape becomes different):

pressedButton.setBackgroundColor(Color.RED);

Is there a nicer way to do that? Thanks.

[Edit: my full code]

package com.example.xo_game;

import android.os.Bundle;
import android.app.Activity;
import android.graphics.Color;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

    Button[] btns;
    char[][] gameState = new char[3][3];
    char turn = 'X';

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

        Button[] btns = new Button[9];

        btns[0] = (Button) findViewById(R.id.btn1);
        btns[1] = (Button) findViewById(R.id.btn2);
        btns[2] = (Button) findViewById(R.id.btn3);

        btns[3] = (Button) findViewById(R.id.btn4);
        btns[4] = (Button) findViewById(R.id.btn5);
        btns[5] = (Button) findViewById(R.id.btn6);

        btns[6] = (Button) findViewById(R.id.btn7);
        btns[7] = (Button) findViewById(R.id.btn8);
        btns[8] = (Button) findViewById(R.id.btn9);

        for (int i = 0; i < 9; i++) {
            btns[i].setTag(i);
            btns[i].setOnClickListener(clickListener);
            gameState[i / 3][i % 3] = 'E';
        }
    }

    View.OnClickListener clickListener = new View.OnClickListener() {

        public void onClick(View v) {
            Button pressedButton = (Button) v;

            int indexOfPressedButton = Integer.parseInt(pressedButton.getTag()
                    .toString());

            int row = indexOfPressedButton / 3;
            int col = indexOfPressedButton % 3;

            if (gameState[row][col] != 'E')
                return;

            gameState[row][col] = turn;

            String turnAsString = String.valueOf(turn);

            pressedButton.setText(turnAsString);

            if (turn == 'X') {
                pressedButton.setBackgroundColor(Color.RED);
                turn = 'O';
            } else {
                pressedButton.setBackgroundColor(Color.GREEN);
                turn = 'X';
            }
        }
    };

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

解决方案

pressedButton.getBackground().setColorFilter(Color.RED, PorterDuff.Mode.MULTIPLY);

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