Android：UI控件RatingBar、SeekBar、ProgressBar、RadioGroup、RadioButton、CheckBox、TextView

public class MainActivity extends Activity implements OnClickListener
{
                                                                                                                                                                                                                                                                                                                                                                                                                                                   
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
                                                                                                                                                                                                                                                                                                                                                                                                                                                       
        findViewById(R.id.button1).setOnClickListener(this);
        findViewById(R.id.button2).setOnClickListener(this);
        findViewById(R.id.button3).setOnClickListener(this);
        findViewById(R.id.button4).setOnClickListener(this);
        findViewById(R.id.button5).setOnClickListener(this);
        findViewById(R.id.button6).setOnClickListener(this);
    }
                                                                                                                                                                                                                                                                                                                                                                                                                                                   
    @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
    @Override
    public void onClick(View v)
    {
        switch (v.getId())
        {
        case R.id.button1:
            btn1Click();
            break;
        case R.id.button2:
            btn2Click();
            break;
        case R.id.button3:
            btn3Click();
            break;
        case R.id.button4:
            btn4Click();
            break;
        case R.id.button5:
            btn5Click();
            break;
        case R.id.button6:
            btn6Click();
            btn7Click();
            break;
        default:
            break;
        }
    }
                                                                                                                                                                                                                                                                                                                                                                                                                                                   
    private void btn7Click()//评分条
    {
        RatingBar ratingBar = (RatingBar) findViewById(R.id.ratingBar1);
        ratingBar.setNumStars(5);
        ratingBar.setRating((float) 0.5);//默认显示的星星数
        ratingBar.setOnRatingBarChangeListener(new OnRatingBarChangeListener()
        {
            @Override
            public void onRatingChanged(RatingBar ratingBar, float rating,boolean fromUser)
            {
                Log.e("RatingBar", "onRatingChanged:" + rating);
            }
        });
    }
    private void btn6Click()//可操作进度条
    {
         SeekBar seekBar= (SeekBar) findViewById(R.id.seekBar1);
         seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
        {
            @Override
            public void onStopTrackingTouch(SeekBar seekBar)//停止拖动
            {
                Log.e("SeekBar", "onStopTrackingTouch");
            }
                                                                                                                                                                                                                                                                                                                                                                                                                                                           
            @Override
            public void onStartTrackingTouch(SeekBar seekBar)//开始拖动
            {
                Log.e("SeekBar", "onStartTrackingTouch");
            }
                                                                                                                                                                                                                                                                                                                                                                                                                                                           
            @Override//进度改变
            public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser)
            {
                Log.e("SeekBar", "onProgressChanged");
            }
        });
    }
    private int progress = 0;
    private void btn5Click()//进度条
    {
        ProgressBar progressBar = (ProgressBar) findViewById(R.id.progressBar2);
        progressBar.setProgress(progress++);
        progressBar.setMax(100);
    }
    private void btn4Click()// 单选按钮
    {
        RadioGroup radioGroup = (RadioGroup)findViewById(R.id.radioGroup1);
        int id = radioGroup.getCheckedRadioButtonId();
        RadioButton radioButton = (RadioButton) findViewById(id);
        String str = radioButton.getText().toString();
        TextView textView = (TextView) findViewById(R.id.textView1);
        switch (id)
        {
        case R.id.radio0:
            textView.setText(str);
            break;
        case R.id.radio1:
            textView.setText(str);
            break;
        case R.id.radio2:
            textView.setText(str);
            break;
        default:
            break;
        }
    }
    private void btn3Click()//设置圆形进度条消失(不占位置)
    {
        findViewById(R.id.progressBar1).setVisibility(View.GONE);
    }
    private void btn2Click()//设置圆形进度条为隐形(原位置空白)
    {
        findViewById(R.id.progressBar1).setVisibility(View.INVISIBLE);
    }
    private void btn1Click()//复选框
    {
        CheckBox checkBox1 = (CheckBox) findViewById(R.id.checkBox1);
        CheckBox checkBox2 = (CheckBox) findViewById(R.id.checkBox2);
        CheckBox checkBox3 = (CheckBox) findViewById(R.id.checkBox3);
        TextView textView = (TextView) findViewById(R.id.textView1);
        StringBuffer str = new StringBuffer();
        if(checkBox1.isChecked())
        {
            str.append(checkBox1.getText());
        }
        if(checkBox2.isChecked())
        {
            str.append(checkBox2.getText());
        }
        if(checkBox3.isChecked())
        {
            str.append(checkBox3.getText());
        }
        textView.setText(str);
    }
                                                                                                                                                                                                                                                                                                                                                                                                                                                   
}

1.代码实现按钮点击方法

button.PerformClick()

注:只有当button.Enabled为true

==============================UI控件属性相关==============================

控件自定义：

1.圆形progressbar

系统styles里找到progressbar的style属性：

true
@android:drawable/progress_medium_white
repeat
3500
48dip
48dip
48dip
48dip

其中，下面这句决定背景图案的设置，这个属性添加到控件的属性里：

@android:drawable/progress_medium_white

将系统的drawable文件夹找到progress_medium_white.xml复制到自己的项目里，并进行修改：

2.进度progressbar

系统style文件内容：

       false
        @android:drawable/progress_horizontal
         @android:drawable/progress_indeterminate_horizontal
          20dip
          20dip

关联的属性为：

name="android:progressDrawable"

修改progress_horizontal.xml：

控件基本属性:

(1)修改属性style

style="?android:attr/progressBarStyleHorizontal"

(2)最大进度值为100

android:max="100"

(3)初始化的进度值

android:secondaryProgress="70"

(4)设置为无限进度

android:indeterminate="true"

(5)代码设置样式

ProgressBar progressBar = new ProgressBar(this);
        progressBar.setIndeterminate(false);
        progressBar.setProgressDrawable(getResources().getDrawable(android.R.drawable.progress_horizontal));
        progressBar.setIndeterminateDrawable(getResources().getDrawable(android.R.drawable.progress_indeterminate_horizontal));
        progressBar.setMinimumHeight(20);

3.seekbar：

类似于progressbar，只是多了个拖动按钮。

添加一个thumb属性：实际上是个selector的按钮。

4.ratingbar:

搜索ratingbar的xml文件进行修改，关联属性：progressDrawable。

以4.2版本里ratingbar_full_holo_dark的风格为例：

ratingbar_full_empty_holo_dark.xml代码:

ratingbar_full_filled_holo_dark.xml代码:

rating_style.xml代码:

XML文件代码：

5.checkbox和radiobutton:

checkbox可以直接添加一个属性修改为star风格：

android:style="?android:attr/starStyle"

关联属性：

android:button="@drawable/checkbox_selector"

XML代码：

selector代码：

监听事件:

        mIv_CheckXieyi.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener()
        {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
            {
                if(isChecked)
                {
                    Log.e("", "updateCheckBox===false");
                }
                else
                {
                    Log.e("", "updateCheckBox===true");
                }
            }
        });

注：

1. 左侧的图案直接使用button无法出现时，可使用drawableLeft设置，如下：

其中tab_title_maproute.xml代码如下:

    
        @null
        8dp
        8dp
        @color/white
        15sp
        @dimen/photo_gallery_tab_hight
        @drawable/selector_tab_bg_center
        center
    

其中selector_route_walk.xml代码如下:

6.TextView相关:

(1)DrawableTop在代码中的实现方法:

public View getView(int position, View convertView, ViewGroup parent)
{
    LayoutInflater inflater = getLayoutInflater();
    TextView textView = null;
    if (position == 0 || position == 2 || position == 8)
    {
        textView = (TextView) inflater.inflate(
                R.layout.navi_menu_item_separator, null);
    }
    else
    {
         textView = (TextView) inflater.inflate(
                R.layout.navi_menu_item, null);
         Drawable drawable = getResources().getDrawable(ICONS[position]);
         drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
         textView.setCompoundDrawables(drawable, null, null, null);//四个参数分别对应为上下左右,相当于xml里对textview设置drawabletop
    }
    textView.setText(TITLES[position]);
    return textView;
}

(2)文本添加链接功能的属性autolink:

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
                                                                                                                        
    setContentView(R.layout.link);
                                                                                                                                
    /*
     * APIdemo里：com.example.android.apis.text;
     */
    SpannableString ss = new SpannableString("text4: Manually created spans. Click here to dial the phone.");
                                                                                                                        
    ss.setSpan(new StyleSpan(Typeface.BOLD), 0, 30, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); // setSpan方法可以用来根据判断文本位置设置文本特定类型
                                                                                                                        
    ss.setSpan(new URLSpan("tel:4155551212"), 31 + 6, 31 + 10, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
                                                                                                                        
    TextView t4 = (TextView) findViewById(R.id.text4);
    t4.setText(ss);
    t4.setMovementMethod(LinkMovementMethod.getInstance());
}

(3)为文字加阴影

(4)添加下划线

如果是在资源文件里，可以这样写:

 

    phone: 1390123456
    MyLink

如果是代码这样写.

TextView textView = (TextView)findViewById(R.id.testView); 
textView.setText(Html.fromHtml(""+"hahaha"+""));

或者也可以这样写:

textview.getPaint().setFlags(Paint.UNDERLINE_TEXT_FLAG);//下划线

(5)通过字符串格式拼凑文本

	String content = TextUtil.preventEmpty(comment.content);
	String replyToUserName = comment.replyToUser.username;
	String ContentBody = APP.getInstance().getString(R.string.discuss_content,replyToUserName,content);
	tvDiscussContent.setText(ContentBody);	

xml资源内写法:

    回复 %1$s : %2$s 

(6)设置部分字体颜色

		textView = (TextView) findViewById(R.id.textview);
		SpannableStringBuilder builder = new SpannableStringBuilder(textView.getText().toString());
		
		//ForegroundColorSpan 为文字前景色，BackgroundColorSpan为文字背景色
		ForegroundColorSpan redSpan = new ForegroundColorSpan(Color.RED);
		ForegroundColorSpan whiteSpan = new ForegroundColorSpan(Color.WHITE);
		ForegroundColorSpan blueSpan = new ForegroundColorSpan(Color.BLUE);
		ForegroundColorSpan greenSpan = new ForegroundColorSpan(Color.GREEN);
		ForegroundColorSpan yellowSpan = new ForegroundColorSpan(Color.YELLOW);
		
		builder.setSpan(redSpan, 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
		builder.setSpan(whiteSpan, 1, 2, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
		builder.setSpan(blueSpan, 2, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
		builder.setSpan(greenSpan, 3, 4, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
		builder.setSpan(yellowSpan, 4,5, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
		
		textView.setText(builder);

(7)设置style:

textView.setTextAppearance(mContext, R.style.labels);

(8)长按复制，api>11

android:textIsSelectable="true"

6.EditText相关:

1.设置默认提示:

android:hint="请输入姓名"
android:textColorHint="#ff00ff00"

android:background="@null"去掉输入框

2.取消焦点和请求焦点方法

            //取消焦点
            mEt_login_name.setFocusable(false);

            //请求焦点
            mEt_login_name.setFocusableInTouchMode(true);
            mEt_login_name.setFocusable(true);
            mEt_login_name.requestFocus();

3.监听编辑框字数

        // 字数变化
        mEt_content.addTextChangedListener(this);
        onTextChanged(mEt_content.getText(), 0, mEt_content.length(), 0);

    /**
     * ******************监听编辑框输入字数**********************************
     */
    @Override
    public void afterTextChanged(Editable s)
    {
    }
    
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after)
    {
    }
    
    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count)
    {
        int remain = MAX_TEXT_COUNT - mEt_content.length();
        mTv_counter.setText(String.valueOf(remain));
        mTv_counter.setTextColor(remain > 0 ? 0xffcfcfcf : 0xffff0000);
    }

4.监听编辑框输入回车键

        mEt_jianhuo.setOnKeyListener(new OnKeyListener()
        {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event)
            {
                if (KeyEvent.KEYCODE_ENTER == keyCode && event.getAction() == KeyEvent.ACTION_DOWN)
                {
                    Log.e("mEt_jianhuo", "enter");
                    saoMaCheckedToServer(mEt_jianhuo.getText().toString() + "", mData.getId() + "", isUseAvg());
                    return true;
                }
                
                return false;
            }
        });

5.设置软键盘回车键显示为"下一条"或者"完成"等

主要属性:

imeActionLabel

imeOptions

singleLine

转载于:https://blog.51cto.com/glblong/1200354