android中的LayoutInflater简单运用
.在做项目的工程中，经常会用到一些相同的背景框，但是前景的选择不同。这个时候可以使用LayoutInflater来实现。
代码如下：
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" android:id="@+id/main_layout"> <TextView android:layout_width="fill_parent" android:gravity="center" android:layout_height="wrap_content" android:text="@string/info" /> <Button android:id="@+id/button1" android:text="@string/dialog1" android:layout_width="match_parent" android:layout_height="wrap_content"></Button> <Button android:id="@+id/button2" android:text="@string/dialog2" android:layout_width="match_parent" android:layout_height="wrap_content"></Button> </LinearLayout>inflater.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout android:id="@+id/relativeLayout1" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"> <Button android:text="@string/personal_cancel" android:layout_width="wrap_content" android:id="@+id/button2" android:layout_height="wrap_content" android:layout_alignBaseline="@+id/button1" android:layout_alignBottom="@+id/button1" android:layout_alignParentRight="true" android:layout_marginRight="70dp"></Button> <EditText android:layout_width="100dp" android:id="@+id/editText1" android:inputType="textPersonName" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true"> <requestFocus></requestFocus> </EditText> <TextView android:layout_width="wrap_content" android:id="@+id/textView1" android:text="@string/inputName" android:layout_height="wrap_content" android:layout_alignBaseline="@+id/editText1" android:layout_alignBottom="@+id/editText1" android:layout_alignParentLeft="true" android:textColor="#ffffff"></TextView> <Button android:text="@string/personal_save" android:layout_width="wrap_content" android:id="@+id/button1" android:layout_height="wrap_content" android:layout_below="@+id/editText1" android:layout_toLeftOf="@+id/editText1"></Button> </RelativeLayout>
inflater2,xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout android:id="@+id/rank_layout" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"> <TextView android:layout_width="wrap_content" android:id="@+id/textView1" android:textAppearance="?android:attr/textAppearanceLarge" android:text="@string/second_inflater" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:layout_marginTop="35dp"></TextView> </RelativeLayout>
background.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="300dp"
android:layout_height="150dp"
android:background="@drawable/bg"
android:id="@+id/bglayout">
</LinearLayout>
java代码部分：
InflaterActivity,java
package fover.inflater;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class InflaterActivity extends Activity implements OnClickListener {
private Button button1;
private Button button2;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findView();
setOnclick();
}
/**
* 描述：设置监听事件
*/
private void setOnclick() {
button1.setOnClickListener(this);
button2.setOnClickListener(this);
}
/**
* 描述：发现各种VIEW
*/
private void findView() {
button1 = (Button) findViewById(R.id.button1);
button2 = (Button) findViewById(R.id.button2);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
Intent intent=new Intent(InflaterActivity.this, personal.class);
startActivity(intent);
break;
case R.id.button2:
Intent intent2=new Intent(InflaterActivity.this, rank.class);
startActivity(intent2);
break;
default:
break;
}
}
}personal.java
package fover.inflater;
import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.widget.LinearLayout;
public class personal extends Activity {
private View inflaterView;
private LinearLayout bgView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.background);
bgView=(LinearLayout)findViewById(R.id.bglayout);
LayoutInflater inflater=LayoutInflater.from(this);
inflaterView=inflater.inflate(R.layout.inflater, null);
bgView.addView(inflaterView,new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT));
}
}
rank.java
package fover.inflater;
import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.widget.LinearLayout;
public class rank extends Activity {
private LinearLayout bigView;
private View inflaterView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.background);
bigView=(LinearLayout)findViewById(R.id.bglayout);
LayoutInflater inflater=LayoutInflater.from(this);
inflaterView=inflater.inflate(R.layout.inflater2, null);
bigView.addView(inflaterView,new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT));
}
}
需要注意的是需要在：AndroidManifest.xml设置权限哦。
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="fover.inflater"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".InflaterActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="personal" android:theme="@android:style/Theme.Dialog" ></activity>
<activity android:name="rank" android:theme="@android:style/Theme.Dialog"></activity>
</application>
</manifest>运行效果截图：
