Android原生控件 -- ProgressBar（进度加载） & ProgressDialog（进度展示对话框）

⒈ProgressBar使用

　　默认

    <ProgressBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        style="@android:style/Widget.Material.ProgressBar"/>

　　设置是否可见

    <ProgressBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        style="@android:style/Widget.Material.ProgressBar"
        android:visibility="visible"/>

　　水平的进度条

    <ProgressBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        style="@android:style/Widget.ProgressBar.Horizontal"/>

　　添加总进度、当前进度及二级进度（给人一种缓存的感觉）

    <ProgressBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        style="@android:style/Widget.ProgressBar.Horizontal"
        android:max="100"
        android:progress="10"
        android:secondaryProgress="30"/>    

　　模拟进度

package cn.coreqi.helloworld2;


import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.ProgressBar;
import android.widget.Toast;


public class MainActivity extends AppCompatActivity {

    private ProgressBar mPb1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mPb1 = findViewById(R.id.pb1);
        handler.sendEmptyMessage(0);
    }
    Handler handler = new Handler(){
        @Override
        public void handleMessage(@NonNull Message msg) {
            super.handleMessage(msg);
            if(mPb1.getProgress() < 100){
                handler.postDelayed(runnable,500);
            }else {
                Toast.makeText(getApplicationContext(),"加载完成",Toast.LENGTH_LONG).show();
            }
        }
    };
    Runnable runnable = new Runnable() {
        @Override
        public void run() {
            mPb1.setProgress(mPb1.getProgress() + 5);
        }
    };
}

　　设置自定义进度图片旋转

<?xml version="1.0" encoding="utf-8"?>
<animated-rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:drawable="@drawable/icon_progress"
    android:pivotX="50%"
    android:pivotY="50%">

</animated-rotate>

    <ProgressBar
        android:id="@+id/pb1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:indeterminateDrawable="@drawable/bg_progress"/>

⒉ProgressDialog使用

　　普通用法

        ProgressDialog progressDialog = new ProgressDialog(getApplicationContext());
        progressDialog.setTitle("提示");
        progressDialog.setMessage("正在加载");
        progressDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
            @Override
            public void onCancel(DialogInterface dialog) {
                
            }
        });
        //progressDialog.setCancelable(false);    
        progressDialog.show();

　　进度条用法

        ProgressDialog progressDialog = new ProgressDialog(getApplicationContext());
        progressDialog.setTitle("提示");
        progressDialog.setMessage("正在下载");
        progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        progressDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
            @Override
            public void onCancel(DialogInterface dialog) {

            }
        });
        //progressDialog.setCancelable(false);
        progressDialog.show();

　　添加按钮

        ProgressDialog progressDialog = new ProgressDialog(getApplicationContext());
        progressDialog.setTitle("提示");
        progressDialog.setMessage("正在下载");
        progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        progressDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
            @Override
            public void onCancel(DialogInterface dialog) {

            }
        });
        progressDialog.setButton(DialogInterface.BUTTON_POSITIVE, "后台进行", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                
            }
        });
        //progressDialog.setCancelable(false);
        progressDialog.show();