AlertDialog的几种使用形式

Love The Way You Lie 2022-08-05 08:13 205阅读 0赞

AlertDialog的几种形式
    
    1.基本的样式
    	<Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="showAlertDialog1"
            android:text="3个按钮的AlertDialog" />
    
        public void showAlertDialog1(View v){
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("Title");
            builder.setMessage("Message");
            builder.setIcon(R.mipmap.ic_launcher);
    
            builder.setPositiveButton("Positive", new DialogInterface.OnClickListener() {		//正面的按钮，如 确定，是 之类的
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(MainActivity.this, "Positive", Toast.LENGTH_SHORT).show();
                }
            });
            builder.setNegativeButton("Negative", new DialogInterface.OnClickListener() {		//反面的按钮，如 取消，否 之类的	
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(MainActivity.this, "Negative", Toast.LENGTH_SHORT).show();
                }
            });
            builder.setNeutralButton("Neutral", new DialogInterface.OnClickListener() {		//中立的按钮，如 不确定 之类的
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(MainActivity.this, "Neutral", Toast.LENGTH_SHORT).show();
                }
            });
    //        AlertDialog alertDialog = builder.create();		//这两句与下面的一句相同
    //        alertDialog.show();
    
            builder.show();
        }
    
    
    
    2.列表的样式
    	<Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="showAlertDialog2"
            android:text="列表的AlertDialog" />
    
    public void showAlertDialog2(View v){
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("Title");
    //      builder.setMessage("Message"); 这句不能加，加上就不会显示列表了
    
            final String s[] = {"Android", "IOS", "Windows Phone"};
            builder.setItems(s, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(MainActivity.this, s[which], Toast.LENGTH_SHORT).show();
                }
            });
            builder.show();
        }
    
    
    3.选项列表的样式
    	<Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="showAlertDialog3"
            android:text="选项列表的AlertDialog" />
    
    public void showAlertDialog3(View v){
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
    
            final String s[] = {"Android", "IOS", "Windows Phone"};
            final ArrayList<String> list = new ArrayList<>();
            builder.setMultiChoiceItems(s, null, new DialogInterface.OnMultiChoiceClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                    if(isChecked)
                        list.add(s[which]);
                    else
                        list.remove(s[which]);
                }
            });
            builder.setPositiveButton("Positive", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(MainActivity.this, list.toString(), Toast.LENGTH_SHORT).show();
                    list.clear();
                }
            });
            builder.show();
    
        }
    
    
    4.单选列表的样式
    	<Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="showAlertDialog4"
            android:text="单选列表的AlertDialog" />
    
        public void showAlertDialog4(View v){
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("Title");
            final String s[] = {"Android", "IOS", "Windows Phone"};
            builder.setSingleChoiceItems(s, 0, new DialogInterface.OnClickListener() { 	//0代表初始是选择第一个
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(MainActivity.this, s[which], Toast.LENGTH_SHORT).show();
                }
            });
            builder.show();
        }
    
    
    5.自定义的样式
    
    	<Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="showAlertDialog5"
            android:text="自定义的AlertDialog" />
    	
    在drawable目录下新建alert_dialog_layout xml布局文件
    
    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
    
        <EditText
            android:id="@+id/username"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:drawableLeft="@mipmap/ic_launcher"
            android:hint="Username"
            android:inputType="text" />
    
        <EditText
            android:id="@+id/password"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:drawableLeft="@mipmap/ic_launcher"
            android:hint="Password"
            android:inputType="textPassword" />
    
    </LinearLayout>
    
    
       public void showAlertDialog5(View v){
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
    
            final View view = getLayoutInflater().inflate(R.layout.alert_dialog_layout, null); //注意，需定义为final
            builder.setView(view);
    //        builder.setView(R.layout.alert_dialog_layout);  在5.0以上使用
            builder.setPositiveButton("Positive", new DialogInterface.OnClickListener() {
    
                @Override
                public void onClick(DialogInterface dialog, int which) {
    
                    EditText username = (EditText) view.findViewById(R.id.username); //在view中findId
                    EditText password = (EditText) view.findViewById(R.id.password);
                    String string = username.getText().toString() +"---"+ password.getText().toString();
                    Toast.makeText(MainActivity.this, string, Toast.LENGTH_SHORT).show();
                }
            });
            builder.show();
        }