Java格式字符串(Java Format String)

除了在字符串資源(String Resources)文章中提到簡單格式化的字符串外, Android也可使用Java格式的字符串(Java Format String).



在/res/values/文件夾下面, 創建XML文件定義字符串資源:

<?xml version="1.0" encoding="utf-8"?>
<resources>
 <string name="jave_format_string">Hello %1$s, it's %2$s.</string>
</resources>

main.xml

<?xml version="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:text="@string/hello"
    />
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:id="@+id/mystring"
    />
</LinearLayout>

Java源代碼

package com.AndroidString;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class AndroidString extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        TextView myString = (TextView)findViewById(R.id.mystring);
        myString.setText(String.format(getString(R.string.jave_format_string), "Android", "Java Format String"));
        
    }
}