android之seekBar

效果：

layout中的xml文件：

                    <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:orientation="vertical">
            
            <TextView
            android:id="@+id/myTextView"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="当前进度："/>
            
            <SeekBar 
            android:id="@+id/mySeekBar"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:max="100"
            android:progress="30"
            />
            </LinearLayout>

Activaty.java文件：

                    packagecom.cheng.seekbarproject; 
            
            importandroid.os.Bundle; 
            importandroid.app.Activity; 
            importandroid.view.Menu; 
            importandroid.widget.SeekBar; 
            importandroid.widget.Toast; 
            importandroid.widget.SeekBar.OnSeekBarChangeListener; 
            importandroid.widget.TextView; 
            
            publicclassSeekBarActivityextendsActivity{ 
            //定义组件 
            privateTextViewmTextView; 
            privateSeekBarmSeekBar; 
             
            @Override
            protectedvoidonCreate(BundlesavedInstanceState){ 
            super.onCreate(savedInstanceState); 
            super.setContentView(R.layout.main); 
            //获得组件 
            mTextView=(TextView)findViewById(R.id.myTextView); 
            mSeekBar=(SeekBar)findViewById(R.id.mySeekBar); 
             
             
            //设置进度条的监听器 
            OnSeekBarChangeListenerosbcl=newOnSeekBarChangeListener(){ 
             
            @Override
            publicvoidonStopTrackingTouch(SeekBarseekBar){ 
            //TODOAuto-generatedmethodstub 
            //当鼠标抬起的时候触发迟事件 
            Toast.makeText(getApplicationContext(),"onStopTrackingTouch",Toast.LENGTH_LONG).show(); 
            } 
             
            @Override
            publicvoidonStartTrackingTouch(SeekBarseekBar){ 
            //TODOAuto-generatedmethodstub 
            //当鼠标点击下的时候触发该事件 
            Toast.makeText(getApplicationContext(),"onStartTrackingTouch",Toast.LENGTH_LONG).show(); 
            } 
             
            @Override
            publicvoidonProgressChanged(SeekBarseekBar,intprogress, 
            booleanfromUser){ 
            //TODOAuto-generatedmethodstub 
            //当进度条的值发生改变的时候触发 
            mTextView.setText("当前进度："+progress); 
            Toast.makeText(getApplicationContext(),"当前进度："+progress+"%",Toast.LENGTH_LONG).show(); 
            } 
            }; 
            //绑定监听 
            mSeekBar.setOnSeekBarChangeListener(osbcl); 
             
             
            } 
            
            @Override
            publicbooleanonCreateOptionsMenu(Menumenu){ 
            //Inflatethemenu;thisaddsitemstotheactionbarifitispresent. 
            getMenuInflater().inflate(R.menu.main,menu); 
            returntrue; 
            } 
            
            }

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