首先自定义一个dialog继承自dialog
public class CustomDialog extends Dialog {
private Context c;
public CustomDialog(@NonNull Context context) {
super(context);
c = context;
}
public CustomDialog(@NonNull Context context, int themeResId) {
super(context, themeResId);
c = context;
}
protected CustomDialog(@NonNull Context context, boolean cancelable, OnCancelListener cancelListener) {
super(context, cancelable, cancelListener);
c = context;
}
/**
* 基本列表弹窗
* @param datas 内容
* @param dialogListener 位置回调
*/
public void init(String[]datas, final DialogListener dialogListener){
View v = LayoutInflater.from(c).inflate(R.layout.dialog_style1,null);
this.setContentView(v);
this.setCancelable(true);
RecyclerView rv = v.findViewById(R.id.rv);
DialogAdapter adapter = new DialogAdapter(c, datas, new DialogRvListener() {
@Override
public void onItemClick(int pos) {
if (dialogListener!=null){
dialogListener.onItemClick(pos);
dismiss();
}
}
});
rv.setAdapter(adapter);
rv.setLayoutManager(new LinearLayoutManager(c));
//窗口位置
setWindow(getWindow());
}
/***
* 带标题弹窗
* @param datas 内容
* @param title 标题
* @param dialogListener 位置回调
*/
public void init(String[]datas,String title,final DialogListener dialogListener){
View v = LayoutInflater.from(c).inflate(R.layout.dialog_style2,null);
this.setContentView(v);
this.setCancelable(true);
//列表
RecyclerView rv = v.findViewById(R.id.rv);
DialogAdapter adapter = new DialogAdapter(c, datas, new DialogRvListener() {
@Override
public void onItemClick(int pos) {
if (dialogListener!=null){
dialogListener.onItemClick(pos);
dismiss();
}
}
});
rv.setAdapter(adapter);
rv.setLayoutManager(new LinearLayoutManager(c));
//标题
TextView tv = v.findViewById(R.id.tv_title);
tv.setText(title);
//窗口位置
setWindow(getWindow());
}
/***
* 自定义标题
* @param datas
* @param viewId
* @param dialogListener
*/
public void init(String[]datas,int viewId,final DialogListener dialogListener){
LinearLayout v = new LinearLayout(c);
v.setOrientation(LinearLayout.VERTICAL);
//自定义标题
View titleView = LayoutInflater.from(c).inflate(viewId,null);
LinearLayout.LayoutParams header_params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT);
v.addView(titleView,header_params);
//列表
RecyclerView rv = new RecyclerView(c);
DialogAdapter adapter = new DialogAdapter(c, datas, new DialogRvListener() {
@Override
public void onItemClick(int pos) {
if (dialogListener!=null){
dialogListener.onItemClick(pos);
dismiss();
}
}
});
rv.setAdapter(adapter);
rv.setLayoutManager(new LinearLayoutManager(c));
rv.setId(R.id.rv);
LinearLayout.LayoutParams rv_params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT);
v.addView(rv,rv_params);
this.setContentView(v);
this.setCancelable(true);
//窗口位置
setWindow(getWindow());
}
/**
* 设置窗口位置
*/
private void setWindow(Window wd){
if (wd==null){
return;
}
WindowManager.LayoutParams params = wd.getAttributes();
params.width = WindowManager.LayoutParams.MATCH_PARENT;
params.height = WindowManager.LayoutParams.WRAP_CONTENT;
wd.setAttributes(params);
wd.setGravity(Gravity.BOTTOM);
}
/**
* 设置动画
*/
public void setAnim(int styleId){
Window w = getWindow();
if (w==null){
return;
}
w.setWindowAnimations(styleId);
}
/**
* 设置位置
*/
public void setPosition(int position){
Window w = getWindow();
if (w==null){
return;
}
w.setGravity(position);
}
}
dialog的布局文件（这里只展示无标题栏的）
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:id="@+id/ll"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="@+id/rv"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
dialog里用到recyclerview 的适配器
public class DialogAdapter extends RecyclerView.Adapter<DialogAdapter.DialogViewHolder> {
private String[]datas;
private DialogRvListener dialogRvListener;
private Context c;
DialogAdapter(Context c, String[] datas, DialogRvListener dialogRvListener){
this.c = c;
this.datas = datas;
this.dialogRvListener = dialogRvListener;
}
@NonNull
@Override
public DialogViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(c).inflate(R.layout.item_dialog,viewGroup,false);
return new DialogViewHolder(v);
}
@Override
public void onBindViewHolder(@NonNull DialogViewHolder holder, final int i) {
holder.tv.setText(datas[i]);
holder.tv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialogRvListener.onItemClick(i);
}
});
}
@Override
public int getItemCount() {
return datas.length;
}
class DialogViewHolder extends RecyclerView.ViewHolder{
TextView tv;
DialogViewHolder(@NonNull View itemView) {
super(itemView);
tv = itemView.findViewById(R.id.tv);
}
}
}
recyclerview里item的布局文件,其实就是个textview
<?xml version="1.0" encoding="utf-8"?>
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="15sp"
android:textColor="@android:color/black"
android:text="123"
android:gravity="center"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:id="@+id/tv"/>
两个位置接口,其实方法是一样的，写两个只不过为了区分:
DialogListener
void onItemClick(int pos);
DialogRvListener
void onItemClick(int pos);
这样，一个基本的自定义dialog就完成了，只需要在activity里调用即可
//带标题，同时自定义风格（这样可以保证宽度占满屏幕）
CustomDialog titledialog = new CustomDialog(this,R.style.customdialog);
titledialog.init(datas, "请选择", new DialogListener() {
@Override
public void onItemClick(int pos) {
//your logic
}
});
//自定义动画
titledialog.setAnim(R.style.mydialog);
我已经封装好并传到了github，大家直接添加依赖使用即可。如果你觉得好用麻烦点个赞，有什么问题或者好的建议也可以在下方留言。
源码地址
https://github.com/moo611/DesongDialog-Android
