5. ProgressBar
5. ProgressBar
5.1 主要属性
属性 含义
max 进度条的最大值
progress 进度条已完成进度值
indeterminate true:进度条不精确显示进度
style=“?android:attr/progressBarStyleHorizontal” 水平进度条
5.2 属性演示
基本样式
使用按钮实现进度条的显示与隐藏
package com.dingjiaxiong.myprogressbar;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ProgressBar progressBar = findViewById(R.id.prob);
Button button = findViewById(R.id.btn);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(progressBar.getVisibility() == view.GONE){
progressBar.setVisibility(view.VISIBLE);
}else{
progressBar.setVisibility(view.GONE);
}
}
});
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<ProgressBar
android:id="@+id/prob"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="显示隐藏进度条"
/>
</LinearLayout>
水平进度条模拟增加
btn_load.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int progress = pro2.getProgress();
progress += 10;
pro2.setProgress(progress);
}
});