android中的LayoutInflater简单运用

转载

mob604756f06ed8 2012-08-13 13:05:00

文章标签 android小学教材 android xml bundle ide 文章分类 运维

.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>