Android 選擇控制項

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    android:orientation="vertical">
    <ImageView android:id="@+id/imageView1" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:src="@drawable/img01"
        android:layout_gravity="center_horizontal" />
    <ToggleButton android:id="@+id/tbutton01"
        android:layout_width="wrap_content" android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal" />
    <CheckBox android:id="@+id/checkbox01" android:layout_width="wrap_content"
        android:text="切換圖片" android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal" />
    <RadioGroup android:id="@+id/radiogroup01"
        android:layout_width="wrap_content" android:layout_height="wrap_content"
        android:orientation="horizontal" android:layout_gravity="center_horizontal">
        <RadioButton android:id="@+id/raidoOn"
            android:layout_width="wrap_content" android:layout_height="wrap_content"
            android:text="Image01" />
        <RadioButton android:id="@+id/raidoOff"
            android:layout_width="wrap_content" android:layout_height="wrap_content"
            android:text="Image02" />

    </RadioGroup>

添加事件：

iv=(ImageView) findViewById(R.id.imageView1);
        tbutton=(ToggleButton) findViewById(R.id.tbutton01);
        checkbox=(CheckBox) findViewById(R.id.checkbox01);
        radioGroup=(RadioGroup) findViewById(R.id.radiogroup01);
        radioOn=(RadioButton) findViewById(R.id.raidoOn);
        radioOff = (RadioButton) findViewById(R.id.raidoOff);
       
        tbutton.setOnCheckedChangeListener(new OnCheckedChangeListener(){

            @Override
            public void onCheckedChanged(CompoundButton buttonView,
                    boolean isChecked) {
                // TODO Auto-generated method stub
                setState(isChecked);
            }           
        });
       
        checkbox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
           
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                // TODO Auto-generated method stub
                setState(isChecked);
            }
        });
       
        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
           
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                // TODO Auto-generated method stub
                boolean state;
                if(checkedId==R.id.raidoOn){
                    state=true;
                }else{
                    state=false;
                }
                setState(state);
            }
        });
       

        // radioOn.setOnCheckedChangeListener(new
        // RadioButton.OnCheckedChangeListener(){
        //
        // @Override
        // public void onCheckedChanged(CompoundButton buttonView,
        // boolean isChecked) {
        // // TODO Auto-generated method stub
        //
        // }});
    }

    private void setState(boolean state) {
        // TODO Auto-generated method stub
        iv.setImageResource((state)?R.drawable.img01:R.drawable.img02);
        tbutton.setChecked(state);
    }

ImageView中常用成員方法：

setAlpha(int alpha)	設定透明度
setImageBitmap(Bitmap bm)	設定顯示指定Bitmap對象
setImageDrawable(Drawable drawable)	設定為指定Drawable
setImageResource（int resId)	設定顯示指定id的資源
setImageURI(Uri uri)	設定指定Uri
setSelected(boolean selected)	設定ImageView的選中狀態

當在不同控制項中選擇時對圖片進行切換：