Android---30---ProgressBar进度条的使用

activity_main.xml：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    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.progressbardemo.MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="小圆形进度条" />

    <ProgressBar
        style="@android:attr/progressBarStyleSmallTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="中型圆形进度条" />

    <ProgressBar
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="大型圆形进度条" />

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

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="水平进度条" />

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

    <ProgressBar
        android:id="@+id/bar"
        style="@android:style/Widget.ProgressBar.Horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:max="100"
        android:progress="30"
        android:secondaryProgress="60" />

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:text="增加进度" />

        <Button
            android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:text="减少进度" />
    </LinearLayout>

</LinearLayout>

MainA.java:

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.ProgressBar;

public class MainActivity extends Activity implements OnClickListener {

	private ProgressBar progressBar;
	private Button button, button2;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		// 如何设置窗口有刻度的效果
		requestWindowFeature(Window.FEATURE_PROGRESS);
		requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);

		setContentView(R.layout.activity_main);
		progressBar = (ProgressBar) findViewById(R.id.bar);
		setProgressBarVisibility(true);
		setProgressBarIndeterminate(true);
		setProgress(3500);
		button = (Button) findViewById(R.id.button1);
		button2 = (Button) findViewById(R.id.button2);

		button.setOnClickListener(this);
		button2.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		switch (v.getId()) {
		case R.id.button1:
			progressBar.setProgress((int) (progressBar.getProgress() * 1.2));
			progressBar.setSecondaryProgress((int) (progressBar
					.getSecondaryProgress() * 1.2));
			break;
		case R.id.button2:
			progressBar.setProgress((int) (progressBar.getProgress() * 0.8));
			progressBar.setSecondaryProgress((int) (progressBar
					.getSecondaryProgress() * 0.8));
			break;
		default:
			break;
		}
	}

}