来源: 互联网  发布时间: 2014-02-18

ActivityGroup应用-如何把一个Activity加载成一个视图
package com.test.activity.group;

import android.app.ActivityGroup;
import android.app.LocalActivityManager;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.Toast;

public class MainActivity extends ActivityGroup implements OnClickListener {

private ImageView mImgBtn1 = null;

private ImageView mImgBtn2 = null;

private ImageView mImgBtn3 = null;

private LocalActivityManager mActivityManager = null;

private LinearLayout contentlayout = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

contentlayout = (LinearLayout) findViewById(R.id.content);

mImgBtn1 = (ImageView) findViewById(R.id.btnModule1);
mImgBtn2 = (ImageView) findViewById(R.id.btnModule2);
mImgBtn3 = (ImageView) findViewById(R.id.btnModule3);

mImgBtn1.setOnClickListener(this);
mImgBtn2.setOnClickListener(this);
mImgBtn3.setOnClickListener(this);

mActivityManager = getLocalActivityManager();
}

@Override
public void onClick(View v) {
contentlayout.removeAllViews();
contentlayout.setVisibility(View.VISIBLE);
if (v.getId() == R.id.btnModule1) {
contentlayout.addView(mActivityManager.startActivity("",
new Intent(this, ActivityTest1.class)).getDecorView(),
LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.FILL_PARENT);

}
else if(v.getId()==R.id.btnModule2){
contentlayout.addView(mActivityManager.startActivity("",
new Intent(this, ActivityTest2.class)).getDecorView(),
LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.FILL_PARENT);
}else if(v.getId()==R.id.btnModule3){
contentlayout.addView(mActivityManager.startActivity("",
new Intent(this, ActivityTest3.class)).getDecorView(),
LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.FILL_PARENT);
}

/*
* contentlayout.removeAllViews();
* contentlayout.setVisibility(View.VISIBLE);
* contentlayout.addView(mActivityManager.startActivity("",new
* Intent(this,
* ActivityTest1.class)).getDecorView(),LinearLayout.LayoutParams
* .FILL_PARENT,LinearLayout.LayoutParams.FILL_PARENT);
* Toast.makeText(this, "组件重绘", Toast.LENGTH_LONG).show(); // TODO
* Auto-generated method stub,contentlayout LinearLayout linear =
* (LinearLayout)findViewById(R.id.content); switch (v.getId()) { case
* R.id.btnModule1:
*
* linear.setVisibility(View.VISIBLE); mScroll.removeAllViews();
* mScroll.addView(mActivityManager.startActivity("",new Intent(this,
* ActivityTest1.class)).getDecorView()); break;
*
* case R.id.btnModule2: linear.setVisibility(View.VISIBLE);
* mScroll.removeAllViews();
* mScroll.addView(mActivityManager.startActivity("",new Intent(this,
* ActivityTest2.class)).getDecorView()); break; case R.id.btnModule3:
* break; }
*/
}
}

    

    来源: 互联网  发布时间: 2014-02-18

UI布局之selector layer-list

1,当我们想把多个图层叠在一起现身的时候，可以使用layer-list

在drawable下建立一个xml文件  例如 login_head.xml

 

<?xml version="1.0" encoding="UTF-8"?>
<layer-list
  xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/user_faceback_drawable" android:drawable="@drawable/faceback" />
    <item android:id="@+id/user_face_drawable" android:drawable="@drawable/h001" android:left="10.0dip" android:top="18.0dip" android:right="25.0dip" android:bottom="35.0dip" />
</layer-list>

 

其中facebook h001都是在drawable下的图片，这样就可以在layout xml文件中使用了

使用方法:

 

android:background="@drawable/login_head"

 

 

2,当我们像让界面随着动作的不同也改变时，例如当checkbox选中和没选中，或者获得焦点时，可以让它显示不同的状态，这些可以在java代码中通过捕捉事件来实现，也可以使用selector，并且更简单。

在drawable下建立一个xml文件，例如 check.xml

 

<?xml version="1.0" encoding="UTF-8"?>
<selector
  xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="false" android:drawable="@drawable/login_input" />
    <item android:state_pressed="true" android:drawable="@drawable/login_input" />
    <item android:state_focused="true" android:drawable="@drawable/input_over" />
</selector>

 

使用方法

 

android:background="@drawable/check"

    

    来源: 互联网  发布时间: 2014-02-18

MKMapView 如何让地图的anotation的callout自动显示

我是这么来实现的.

首先在viewWillAppear  方法中定义了一个

 

[self performSelector:@selector(showCallout) withObject:nil afterDelay:1.0];

 

让方法showCallout在1.0秒钟后被调用.

 

- (void)showCallout {
    [mapView selectAnnotation:attackedAnnotation animated:YES];
}

 

上面黄色的部分的方法是官方api中的方法.