Android应用开发之UI组件(TextView;EditText)
TextView
属性设置
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/autotx"
注意：setText（）或setTextColor（）方法的参数是一个int值还是一个资源地址
android:autoLink
<TextView
android:id="@+id/tvWebUrl"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:autoLink="web" />
<TextView
android:id="@+id/tvEmail"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:autoLink="email" />
<TextView
android:id="@+id/tvPhone"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:autoLink="phone" />
<TextView
android:id="@+id/tvMap"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:autoLink="map" />
<TextView
android:id="@+id/tvAll"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:autoLink="all"
android:text="你好，很高兴认识你，我的博客：http://blog.csdn.net/jiahui524。 手机号码：15580974038.邮箱：[email protected]" />
<TextView
android:id="@+id/tvHtml"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/tvHtml1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/link_text_manual" />
private void findViews(){
TextView tvWebUrl = (TextView)findViewById(R.id.tvWebUrl);
tvWebUrl.setText("网易:http://www.163.com");
TextView tvEmail,tvPhone, tvMap ,tvHtml;
tvEmail = (TextView) this.findViewById(R.id.tvEmail);
tvPhone = (TextView) this.findViewById(R.id.tvPhone);
tvMap = (TextView) this.findViewById(R.id.tvMap);
tvHtml = (TextView)this.findViewById(R.id.tvHtml);
tvEmail.setText("我的邮箱：[email protected]");
tvPhone.setText("我的电话:500000");
tvHtml.setText(Html.fromHtml("<font size='33' color='#333333'>我<i>爱</i>北</font>京天<b>安</b>门/n <br/>" +
"<a href='http://www.163.com'>163</a>"));
}
<string name="link_text_manual"> 作者博客： <a href="http://nokiaguy.blogjava.net"> http://nokiaguy.blogjava.net </a> </string>
注意：
android:autoLink=”email” ：会出现unsupported action，可能是模拟器bug，须探究
另外使用Html.fromHtml时，超链接只具备外观，不能跳转
带边框的TextView
自定义带边框的TextView
package cn.class3g.activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.widget.TextView;
public class BorderTextView extends TextView {
public BorderTextView(Context context, AttributeSet attr) {
super(context,attr);
}
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
Paint paint = new Paint();
paint.setColor(android.graphics.Color.GREEN);
canvas.drawLine(0, 0, this.getWidth() - 1, 0, paint);
canvas.drawLine(0, 0, 0, this.getHeight() - 1, paint);
canvas.drawLine(this.getWidth() - 1, 0, this.getWidth() - 1,
this.getHeight() - 1, paint);
canvas.drawLine(0, this.getHeight() - 1, this.getWidth() - 1,
this.getHeight() - 1, paint);
}
}
<cn.class3g.activity.BorderTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="30dp"
android:text="xxxxxxxxxxxxx"
/>
9-patch工具的使用
<TextView
android:id="@+id/tvBorder"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/link_text_manual"
android:textColor="#00FF00"
android:background="@drawable/back" />
EditText
基本属性的设置
输入特定字符
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:password="true"
android:digits="01234" />
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:digits="abcd" />
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:inputType="number" />
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:inputType="textEmailAddress" />
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:numeric="decimal|signed" />
EditText中回车键的使用
为EditText对象的注册OnKeyListener事件，实现onKey（）方法
<EditText
android:id="@+id/text1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="text1" />
<Button
android:id="@+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:visibility="gone"
android:text="Button" />
et.setOnKeyListener(this);
…
public boolean onKey(View view, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_ENTER) {
btn.setText(et.getText());
et.setVisibility(View.GONE);
btn.setVisibility(View.VISIBLE);
}
return true;
}
自动完成输入内容的组件
l AutoCompleteTextView
l MultiCompleteTextView
<AutoCompleteTextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/autotx"
/>
<MultiAutoCompleteTextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/mautotx"
/>
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.hide);
btn = (Button) this.findViewById(R.id.button1);
et = (EditText) this.findViewById(R.id.text1);
et.setOnKeyListener(this);
autotx = (AutoCompleteTextView) this.findViewById(R.id.autotx);
String[] s={"a","abc","ab","b","bc","bdad"};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,s);
autotx.setAdapter(adapter);
mautotx = (MultiAutoCompleteTextView) this.findViewById(R.id.mautotx);
mautotx.setAdapter(adapter);
mautotx.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());
}