前几天更新了一下我手机上的百阅软件,上面的浮动对话框选择很好看,就模仿了一下。先看一下运行效果。
主要原理是在dialog里扔进一个GridView,可以作为一个组件使用。源码如下
主要原理是在dialog里扔进一个GridView,可以作为一个组件使用。源码如下
对话框使用的layout:grid_dialog.xml
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- <?xml
version="1.0"
encoding="utf-8"?> - <RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android" - android:id="@+id/layout_root"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- >
- <GridView
android:id="@+id/mygridview" - android:numColumns="3"
- android:gravity="center"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:padding="10dp"
- android:verticalSpacing="20dp"
- android:horizontalSpacing="10dp"
- android:stretchMode="columnWidth"
- >
- </GridView>
- </RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout_root"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
<GridView android:id="@+id/mygridview"
android:numColumns="3"
android:gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:verticalSpacing="20dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
>
</GridView>
</RelativeLayout>
对话框列表中的项目layout:grid_item.xml
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- <?xml
version="1.0"
encoding="utf-8"?> - <RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android" - android:id="@+id/RelativeLayout01"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- android:gravity="center"
- >
- <ImageView
android:id="@+id/item_image" - android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_centerHorizontal="true"
- />
- <TextView
android:id="@+id/item_text" - android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_below="@id/item_image"
- android:layout_centerHorizontal="true"
- android:text="@+id/item_text"/>
- </RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/RelativeLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
>
<ImageView android:id="@+id/item_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
/>
<TextView android:id="@+id/item_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/item_image"
android:layout_centerHorizontal="true"
android:text="@+id/item_text"/>
</RelativeLayout>
自定义的对话框类:GridDialog.java
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- import java.util.ArrayList;
- import java.util.HashMap;
- import java.util.List;
- import java.util.Map;
- import android.app.Activity;
- import android.app.Dialog;
- import android.content.Context;
- import android.content.Intent;
- import android.view.Gravity;
- import android.view.View;
- import android.view.Window;
- import android.view.WindowManager.LayoutParams;
- import android.widget.AdapterView;
- import android.widget.AdapterView.OnItemClickListener;
- import android.widget.GridView;
- import android.widget.SimpleAdapter;
- import android.widget.Toast;
- public class GridDialog
extends Dialog { - private List<int[]> griditem =
new ArrayList<int[]>(); - {
- griditem.add(new
int[] { R.drawable.edit, R.string.edit });//图片资源,标题,可自己设定 - griditem.add(new int[] { R.drawable.delete, R.string.delete });
- griditem.add(new
int[] { R.drawable.favsaddto, R.string.favsaddto }); - griditem.add(new int[] { R.drawable.favs, R.string.favs });
- griditem.add(new
int[] { R.drawable.settings, R.string.settings }); - griditem.add(new int[] { R.drawable.sync, R.string.sync });
- griditem.add(new
int[] { R.drawable.save, R.string.save }); - griditem.add(new int[] { R.drawable.search, R.string.search });
- griditem.add(new
int[] { R.drawable.camera, R.string.camera }); - };
- private GridView gridview;
- public GridDialog(Context context,
boolean cancelable, - OnCancelListener cancelListener) {
- super(context, cancelable, cancelListener);
- }
- public GridDialog(Context context,
int theme) { - super(context, theme);
- }
- private void initGrid() {
- List<Map<String, Object>> items = new ArrayList<Map<String, Object>>();
- for (int[] item : griditem) {
- Map<String, Object> map = new HashMap<String, Object>();
- map.put("image", item[0]);
- map.put("title", getContext().getString(item[1]));
- items.add(map);
- }
- SimpleAdapter adapter = new SimpleAdapter(getContext(),
- items, // 列表内容
- R.layout.grid_item, new String[] {
"title", "image" }, - new int[] { R.id.item_text, R.id.item_image });
- gridview = (GridView) findViewById(R.id.mygridview);
- // 为GridView设置数据
- gridview.setAdapter(adapter);
- }
- public GridDialog(Context context) {
- super(context);
- requestWindowFeature(Window.FEATURE_NO_TITLE);
// 灭掉对话框标题,要放在setContentView前面否则会报错 - setContentView(R.layout.grid_dialog);
- setCanceledOnTouchOutside(true);// 点击对话框外部取消对话框显示
- LayoutParams lp = getWindow().getAttributes();
- getWindow().setAttributes(lp);
- getWindow().addFlags(LayoutParams.FLAG_BLUR_BEHIND);// 添加模糊效果
- // 设置透明度,对话框透明(包括对话框中的内容)alpha在0.0f到1.0f之间。1.0完全不透明,0.0f完全透明
- // lp.alpha = 0.5f;
- lp.dimAmount = 0.1f;// 设置对话框显示时的黑暗度,0.0f和1.0f之间,在我这里设置成0.0f会出现黑屏状态,求解。
- initGrid();// 添加表格按钮内容
- }
- /**
- * 绑定事件到指定的Activity上
- *
- * @param activity
- */
- public void bindEvent(Activity activity) {
- setOwnerActivity(activity);// )把对话框附着到一个Activity上
- gridview.setOnItemClickListener(new OnItemClickListener() {
- public void onItemClick(AdapterView<?> parent, View v,
- int position,
long id) { - switch (position) {// position从0开始,GridView中按钮的位置
- case 0:
- Toast.makeText(getContext(), "测试", Toast.LENGTH_SHORT)
- .show();
- break;
- }
- }
- });
- }
- }
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.content.Intent;
import android.view.Gravity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager.LayoutParams;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
public class GridDialog extends Dialog {
private List<int[]> griditem = new ArrayList<int[]>();
{
griditem.add(new int[] { R.drawable.edit, R.string.edit });//图片资源,标题,可自己设定
griditem.add(new int[] { R.drawable.delete, R.string.delete });
griditem.add(new int[] { R.drawable.favsaddto, R.string.favsaddto });
griditem.add(new int[] { R.drawable.favs, R.string.favs });
griditem.add(new int[] { R.drawable.settings, R.string.settings });
griditem.add(new int[] { R.drawable.sync, R.string.sync });
griditem.add(new int[] { R.drawable.save, R.string.save });
griditem.add(new int[] { R.drawable.search, R.string.search });
griditem.add(new int[] { R.drawable.camera, R.string.camera });
};
private GridView gridview;
public GridDialog(Context context, boolean cancelable,
OnCancelListener cancelListener) {
super(context, cancelable, cancelListener);
}
public GridDialog(Context context, int theme) {
super(context, theme);
}
private void initGrid() {
List<Map<String, Object>> items = new ArrayList<Map<String, Object>>();
for (int[] item : griditem) {
Map<String, Object> map = new HashMap<String, Object>();
map.put("image", item[0]);
map.put("title", getContext().getString(item[1]));
items.add(map);
}
SimpleAdapter adapter = new SimpleAdapter(getContext(),
items, // 列表内容
R.layout.grid_item, new String[] { "title", "image" },
new int[] { R.id.item_text, R.id.item_image });
gridview = (GridView) findViewById(R.id.mygridview);
// 为GridView设置数据
gridview.setAdapter(adapter);
}
public GridDialog(Context context) {
super(context);
requestWindowFeature(Window.FEATURE_NO_TITLE); // 灭掉对话框标题,要放在setContentView前面否则会报错
setContentView(R.layout.grid_dialog);
setCanceledOnTouchOutside(true);// 点击对话框外部取消对话框显示
LayoutParams lp = getWindow().getAttributes();
getWindow().setAttributes(lp);
getWindow().addFlags(LayoutParams.FLAG_BLUR_BEHIND);// 添加模糊效果
// 设置透明度,对话框透明(包括对话框中的内容)alpha在0.0f到1.0f之间。1.0完全不透明,0.0f完全透明
// lp.alpha = 0.5f;
lp.dimAmount = 0.1f;// 设置对话框显示时的黑暗度,0.0f和1.0f之间,在我这里设置成0.0f会出现黑屏状态,求解。
initGrid();// 添加表格按钮内容
}
/**
* 绑定事件到指定的Activity上
*
* @param activity
*/
public void bindEvent(Activity activity) {
setOwnerActivity(activity);// )把对话框附着到一个Activity上
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
switch (position) {// position从0开始,GridView中按钮的位置
case 0:
Toast.makeText(getContext(), "测试", Toast.LENGTH_SHORT)
.show();
break;
}
}
});
}
}
上面的代码没有实现active的跳转。如果想实现跳转采用下面方法:
[java] view plaincopyprint?
- private void redirect(Class<?> cls) {
- if (getOwnerActivity().getClass() != cls) {//如果不是对话框绑定的active则跳转
- dismiss();//关闭对话框
- Intent intent = new Intent();
- intent.setClass(getContext(), cls);
- getContext().startActivity(intent);//跳转
- }
- }
private void redirect(Class<?> cls) {
if (getOwnerActivity().getClass() != cls) {//如果不是对话框绑定的active则跳转
dismiss();//关闭对话框
Intent intent = new Intent();
intent.setClass(getContext(), cls);
getContext().startActivity(intent);//跳转
}
}
对话框调用方法:
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- public class MainActivity
extends Activity { - /** Called when the activity is first created. */
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- Button button=(Button) findViewById(R.id.Button01);
- button.setOnClickListener(new Button.OnClickListener(){
- @Override
- public void onClick(View arg0) {
- GridDialog dialog=new GridDialog(MainActivity.this);
- dialog.bindEvent(MainActivity.this);
- dialog.show();
- }
- });
- }
- }
public class MainActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button=(Button) findViewById(R.id.Button01);
button.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View arg0) {
GridDialog dialog=new GridDialog(MainActivity.this);
dialog.bindEvent(MainActivity.this);
dialog.show();
}
});
}
}
这个功能还是比较弱,比如无法动态增加按钮。这里为了简洁将一些style效果写到代码里了,还是写入xml里容易控制。