Android学习笔记05：ProgressBar的使用

[Android开发视频教学].01_13_Android常见控件（三）之一

学习使用ProgressBar

style="?android:attr/progressBarStyleHorizontal"

style="@android:style/Widget.ProgressBar.Horizontal"

package fengda.android08; import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ProgressBar; public class Activity08 extends Activity { private ProgressBar progressBar1; private ProgressBar progressBar2; private Button button; private int i =0; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_activity08); progressBar1 = (ProgressBar) findViewById(R.id.progressBar1); progressBar2 = (ProgressBar) findViewById(R.id.progressBar2); button = (Button) findViewById(R.id.button);; button.setOnClickListener( new ButtonOnClickListener()); } class ButtonOnClickListener implements OnClickListener { @Override public void onClick(View v) { // TODO Auto-generated method stub if (i==0){ progressBar1.setVisibility(View.VISIBLE); progressBar2.setVisibility(View.VISIBLE); } else if(i<100){ progressBar1.setProgress(i); progressBar2.setProgress(i); progressBar2.setSecondaryProgress(i+10); } else { progressBar1.setVisibility(View.GONE); progressBar2.setVisibility(View.GONE); } i = i+10; } } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_activity08, menu); return true; } }

Android

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