MainActivity.java

package com.example.mars_2400_seekbar; import android.support.v7.app.ActionBarActivity; import android.support.v7.app.ActionBar; import android.support.v4.app.Fragment; import android.app.Activity; import android.os.Bundle; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.SeekBar; import android.widget.SeekBar.OnSeekBarChangeListener; import android.widget.TextView; import android.os.Build; public class MainActivity extends Activity implements OnSeekBarChangeListener { private TextView tv; private SeekBar sb; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tv = (TextView) findViewById(R.id.textView1); sb = (SeekBar) findViewById(R.id.seekbar); sb.setOnSeekBarChangeListener(this); } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { // TODO Auto-generated method stub tv.setText("Progress is " + progress + (fromUser " Nontrigger") + " by user."); } @Override public void onStartTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub System.out.println("onStart-->"+seekBar.getProgress()); } @Override public void onStopTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub System.out.println("onStop-->"+seekBar.getProgress()); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }

activity_main.xml

<"1.0" encoding="UTF-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/textView1"/> <SeekBar android:id="@+id/seekbar" android:layout_width="fill_parent" android:layout_height="wrap_content"/> </LinearLayout>

以上就是小编为大家带来的android之SeekBar控件用法详解的全部内容了，希望对大家有所帮助，多多支持查字典教程网~

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