ProgressBar1.java

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.pinecone.technology.mcommerce.learning.android.chapter06;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.ProgressBar;

/**
 * Demonstrates how to use progress bars as widgets and in the title bar. The
 * progress bar in the title will be shown until the progress is complete, at
 * which point it fades away.
 */
public class ProgressBar1 extends Activity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		// Request the progress bar to be shown in the title
		requestWindowFeature(Window.FEATURE_PROGRESS);
		setContentView(R.layout.c06_progressbar_1);
		setProgressBarVisibility(true);

		final ProgressBar progressHorizontal = (ProgressBar) findViewById(R.id.progress_horizontal);
		setProgress(progressHorizontal.getProgress() * 100);
		setSecondaryProgress(progressHorizontal.getSecondaryProgress() * 100);

		Button button = (Button) findViewById(R.id.increase);
		button.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				// ProgressBar进度值增加1
				progressHorizontal.incrementProgressBy(1);
				// Title progress is in range 0..10000
				setProgress(100 * progressHorizontal.getProgress());
			}
		});

		button = (Button) findViewById(R.id.decrease);
		button.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				// ProgressBar进度值减少1
				progressHorizontal.incrementProgressBy(-1);
				// Title progress is in range 0..10000
				setProgress(100 * progressHorizontal.getProgress());
			}
		});

		button = (Button) findViewById(R.id.increase_secondary);
		button.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				// ProgressBar背后的第二个进度条 进度值增加1
				progressHorizontal.incrementSecondaryProgressBy(1);
				// Title progress is in range 0..10000
				setSecondaryProgress(100 * progressHorizontal
						.getSecondaryProgress());
			}
		});

		button = (Button) findViewById(R.id.decrease_secondary);
		button.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				// ProgressBar背后的第二个进度条 进度值减少1
				progressHorizontal.incrementSecondaryProgressBy(-1);
				// Title progress is in range 0..10000
				setSecondaryProgress(100 * progressHorizontal
						.getSecondaryProgress());
			}
		});

	}
}