Android实现带有进度条的按钮效果

本文实例为大家分享了Android实现带有进度条按钮效果的具体代码，供大家参考，具体内容如下

安卓中带有进度条效果的按钮，如下图：

1.布局文件如下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' 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='.MainActivity' > <TextView android: android:layout_width='wrap_content' android:layout_height='wrap_content' android:text='带有进度条的Button' /> <RelativeLayout android:layout_width='fill_parent' android:layout_height='50dp' android:layout_centerHorizontal='true' android:layout_centerVertical='true' android:gravity='bottom' > <ProgressBar android:android:layout_width='fill_parent' android:layout_height='fill_parent' android:background='@drawable/aa_button_gray_normal' android:max='100' android:progress='0' android:progressDrawable='@drawable/progress_selector' /> <Button android:android:layout_width='fill_parent' android:layout_height='fill_parent' android:layout_centerHorizontal='true' android:layout_centerVertical='true' android:background='@drawable/btn_selector' android:text='下载' /> </RelativeLayout> </RelativeLayout>

2.java主界面代码如下：MainActivity.java

package com.example.buttondemo; import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.widget.Button;import android.widget.ProgressBar;import android.widget.TextView; public class MainActivity extends Activity { int i = 0; ProgressBar progressBar = null; Button downLoadBtn = null; Handler handler = new Handler() { public void handleMessage(android.os.Message msg) { switch (msg.what) { case 1: i += 5; progressBar.setProgress(i); if (i != 100) { handler.sendEmptyMessageDelayed(new Message().what = 1, 500); downLoadBtn.setText(i + '%'); } else if (i == 100) { downLoadBtn.setText('下载完成'); // 进度条运行完成时按钮可用 downLoadBtn.setEnabled(true); } break;default: break; } }; }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); TextView tx = (TextView) findViewById(R.id.text); progressBar = (ProgressBar) findViewById(R.id.progressBar); downLoadBtn = (Button) findViewById(R.id.downLoadBtn); downLoadBtn.setOnClickListener(new View.OnClickListener() {@Override public void onClick(View v) { i = 0; handler.sendEmptyMessage(new Message().what = 1); // 进度条运行时按钮不可用 downLoadBtn.setEnabled(false); } }); } }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持好吧啦网。