【发布时间】：2016-05-12 08:39:48
【问题描述】：
我正在使用 Android Studio
我想在每次点击时更改按钮的颜色。
在大约 10 种颜色之间循环，然后在连续循环中重新开始。
例如我使用setBackgroundResource(@drawable/oval)
oval = blue circle button
oval2 = red circle button
oval3 = green circle button and so on.
到目前为止，我知道 button1 以椭圆形（蓝色）开头，而 onClick 变成椭圆形2（红色）
所以我的问题是，如何添加另一个单击以将其更改为椭圆形3（绿色），然后将其循环回开始椭圆形（蓝色）？
MainActivity.java
package com.example.shadowz.buttononclick;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.support.v4.app.Fragment;
import android.support.v4.view.TintableBackgroundView;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity
{
private Button colorChangeButton;
private TextView basicText;
private RelativeLayout background;
Button button1;
Button button2;
Button button3;
Button button4;
Button button5;
Drawable oval1;
Drawable oval2;
Drawable oval3;
Drawable oval4;
Drawable oval5;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
background = (RelativeLayout) findViewById(R.id.backgroundLayout);
basicText = (TextView) findViewById(R.id.button1);
colorChangeButton = (Button) findViewById(R.id.button1);
// Code Break
button1 = (Button) findViewById(R.id.button1);
button2 = (Button) findViewById(R.id.button2);
button3 = (Button) findViewById(R.id.button3);
button4 = (Button) findViewById(R.id.button4);
button5 = (Button) findViewById(R.id.button5);
// Code Break
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v == button1) {
button1.setBackgroundResource(R.drawable.oval2);
}
}
});
// Code Break
button2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v == button2) {
button2.setBackgroundResource(R.drawable.oval3);
}
}
});
// Code Break
button3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v == button3) {
button3.setBackgroundResource(R.drawable.oval4);
}
}
});
// Code Break
button4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v == button4) {
button4.setBackgroundResource(R.drawable.oval5);
}
}
});
// Code Break
button5.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v == button5) {
button5.setBackgroundResource(R.drawable.oval6);
}
}
});
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.shadowz.buttononclick.MainActivity"
android:id="@+id/backgroundLayout">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!" />
<Button
android:id="@+id/button1"
android:layout_width="140dp"
android:layout_height="140dp"
android:text="button1"
android:background="@drawable/oval"
android:padding="@dimen/abc_action_bar_content_inset_material"
android:layout_below="@+id/button3"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<Button
android:id="@+id/button2"
android:layout_width="140dp"
android:layout_height="140dp"
android:text="button2"
android:background="@drawable/oval"
android:layout_alignTop="@+id/button1"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
<Button
android:id="@+id/button3"
android:layout_width="140dp"
android:layout_height="140dp"
android:text="button3"
android:background="@drawable/oval"
android:singleLine="false"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<Button
android:id="@+id/button4"
android:layout_width="140dp"
android:layout_height="140dp"
android:text="button4"
android:background="@drawable/oval"
android:padding="@dimen/abc_action_bar_content_inset_material"
android:layout_above="@+id/button2"
android:layout_alignLeft="@+id/button2"
android:layout_alignStart="@+id/button2" />
<Button
android:id="@+id/button5"
android:layout_width="140dp"
android:layout_height="140dp"
android:text="button5"
android:background="@drawable/oval"
android:padding="@dimen/abc_action_bar_content_inset_material"
android:layout_alignBottom="@+id/button1"
android:layout_centerHorizontal="true"
android:layout_marginBottom="78dp" />
</RelativeLayout>
【问题讨论】：
标签： android android-studio android-button