ProgressBar（进度条）的使用案例

activitprogressbar.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:id="@+id/activity_progressbar"
    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.jump.ProgressbarActivity">
    <ProgressBar
        android:id="@+id/pb_top"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <ProgressBar
        android:id="@+id/pb_botton"
        android:layout_below="@id/pb_top"
        android:layout_marginTop="20dp"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="match_parent"
        android:layout_height="20dp"
        android:max="100"/>
    <Button
        android:id="@+id/btn_add"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/pb_botton"
        android:text="add"
        android:textSize="30dp"
        android:layout_marginTop="30dp"/>

</RelativeLayout>

ProgressBarActivity.java

package com.example.jump;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;

public class ProgressbarActivity extends AppCompatActivity {
    private Button btn_add;
    private ProgressBar pb_bottom;
    private int progress=0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_progressbar);
        intiView();
    }
    private void  intiView(){
        btn_add= (Button) findViewById(R.id.btn_add);
        pb_bottom= (ProgressBar) findViewById(R.id.pb_botton);
        btn_add.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(progress<100){
                    progress+=10;
                    pb_bottom.setProgress(progress);
                }else {//进度条循环显示
                    progress=0;
                    pb_bottom.setProgress(progress);
                }
            }
        });
    }
}

标签：进度条,private,ProgressBar,案例,add,import,android,btn
来源： https://blog.51cto.com/u_15249199/2847151