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();
}
}