Android13.进度条

xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@mipmap/xxll"
    tools:context="com.mycompany.a13_progressbar.MainActivity">
    <ProgressBar
        android:id="@+id/progressbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        style="@android:style/Widget.ProgressBar.Horizontal"
        android:max="100"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="50dp"/>
</RelativeLayout>

java:

import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.ProgressBar;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private ProgressBar progressBar;
    private int mProgress=0;
    private Handler mHandle;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);//设置全屏显示
        progressBar=findViewById(R.id.progressbar);
        mHandle=new Handler(){
            @Override
            public void handleMessage(Message msg) {
                if(msg.what==0x111)
                {
                    progressBar.setProgress(mProgress);
                }
                else
                {
                    Toast.makeText(MainActivity.this,"操作完成",Toast.LENGTH_LONG).show();
                    progressBar.setVisibility(View.GONE);
                }
            }
        };
        new Thread(new Runnable() {
            @Override
            public void run() {
                while(true)
                {
                    mProgress=doWork();
                    Message m=new Message();
                    if(mProgress<100)
                    {
                        m.what=0x111;
                        mHandle.sendMessage(m);
                    }
                    else
                    {
                        m.what=0x110;
                        mHandle.sendMessage(m);
                        break;
                    }
                }
            }
            private int doWork()
            {
                mProgress+=Math.random()*10;
                try {
                    Thread.sleep(200);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                return mProgress;
            }
        }).start();
    }
}