andriod 资源文件之存取操作

<?xmlversion="1.0"encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<Button
android:id="@+id/read"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="读取资源文件(Raw)"/>

<TextView
android:id="@+id/cont"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>

</LinearLayout>

packagecom.example.yanlei.wifi;

importandroid.content.res.Resources;
importandroid.os.Bundle;
importandroid.support.v7.app.AppCompatActivity;
importandroid.view.View;
importandroid.view.View.OnClickListener;
importandroid.widget.Button;
importandroid.widget.Toast;

importjava.io.IOException;
importjava.io.InputStream;
importjava.util.Scanner;
publicclassMainActivityextendsAppCompatActivity{

privateButtonbtnRead=null;

@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnRead=(Button)super.findViewById(R.id.read);

//读取资源文件
btnRead.setOnClickListener(newOnClickListener(){
publicvoidonClick(Viewv)
{
//获取资源对象
Resourcesres=MainActivity.this.getResources();
//通过openRawResource()读取资源为R.raw.friend的资源文件，结果返回到InputStream
InputStreaminput=res.openRawResource(R.raw.friend);
//读取资源文件内容
Scannerscan=newScanner(input);
StringBufferinfo=newStringBuffer();
while(scan.hasNext())
info.append(scan.next()).append("\n");
scan.close();

try{
input.close();
}catch(IOExceptione){
e.printStackTrace();
}

Toast.makeText(getApplicationContext(),info.toString(),Toast.LENGTH_LONG).show();
}
});

}
}