列举安卓常用View视图

本篇常用的View如图中所示：

xml布局代码

<?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">

    <Button
        android:text="@string/yiban_dialog"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="showYiban"/>

    <Button
        android:text="显示单选列表AlertDialog"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="showLiebiao"/>

    <Button
        android:text="显示自定义AlertDialog"

        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="showDingYi"/>

    <Button
        android:layout_marginTop="20dp"
        android:text="显示圆形进度ProgressDialog"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="showYuanXing"/>

    <Button
        android:text="显示水平进度ProgressDialog"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="showShuiPing"/>

    <Button
        android:layout_marginTop="20dp"
        android:text="显示DatePickerDialog"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="showDate"/>

    <Button
        android:text="显示TimerPickerDialog"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="showTime"/>

</LinearLayout>

自定义dialog-xml

<?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">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:scaleType="fitXY"
        android:src="@drawable/title" />

    <EditText
        android:id="@+id/et_dialog_username"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入用户名" />

    <EditText
        android:id="@+id/et_dialog_pwd"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入密码"
        android:inputType="textPassword" />

</LinearLayout>

java代码

public class DialogActivity extends AppCompatActivity {

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

    public void showYiban(View v) {
        new AlertDialog.Builder(this)
                .setTitle("删除数据")
                .setPositiveButton("取消", (onClickDialogInterface, which) -> {
                    Toast.makeText(DialogActivity.this, "取消删除", Toast.LENGTH_SHORT).show();
                })
                .setNegativeButton("删除", (onClickDialogInterface, which) -> {
                    Toast.makeText(DialogActivity.this, "删除数据", Toast.LENGTH_SHORT).show();
                })
                .show();
    }

    private String choice;

    public void showLiebiao(View v) {
        final String[] color = {"红色", "绿色", "蓝色", "橙色"};

        new AlertDialog.Builder(this)
                .setTitle("选择背景颜色")
                .setPositiveButton("取消", (dialog, which) -> {
                    Toast.makeText(DialogActivity.this, "您取消选择了" + choice, Toast.LENGTH_SHORT).show();
                })
                .setNegativeButton("确定", (dialog, which) -> {
                    Toast.makeText(DialogActivity.this, "您选择了" + choice, Toast.LENGTH_SHORT).show();
                })
                .setSingleChoiceItems(color, 0, (dialog, which) -> {
//                    dialog.dismiss();
                    choice = color[which];
                })
                .show();
    }

    public void showDingYi(View v) {
        View view = View.inflate(this, R.layout.view_dialog, null);
        final EditText et_dialog_username = view.findViewById(R.id.et_dialog_username);
        final EditText et_dialog_pwd = view.findViewById(R.id.et_dialog_pwd);
        new AlertDialog.Builder(this)
                .setView(view)
                .setPositiveButton("取消", (dialog, which) -> {
                })
                .setNegativeButton("确定", (dialog, which) -> {
                    final String username = et_dialog_username.getText().toString();
                    final String pwd = et_dialog_pwd.getText().toString();
                    Toast.makeText(DialogActivity.this, username + ":" + pwd, Toast.LENGTH_SHORT).show();
                })
                .show();
    }

    public void showYuanXing(View view) {
        final ProgressDialog dialog = ProgressDialog.show(this, "数据下载", "数据下载中...");
        new Thread(() -> {
            for (int i = 0; i < 20; i++) {
                try {
                    Thread.sleep(200);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            dialog.dismiss();
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(DialogActivity.this, "加载完成", Toast.LENGTH_SHORT).show();
                }
            });

        }).start();
    }

    public void showShuiPing(View view) {
        ProgressDialog pd = new ProgressDialog(this);
        pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        pd.show();
        new Thread(new Runnable() {
            @Override
            public void run() {
                int time = 100;
                for (int i = 0; i < time; i++) {
                    try {
                        Thread.sleep(100);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    pd.setProgress(pd.getProgress() + 1);
                }
                pd.dismiss();
            }
        }).start();
    }

    Calendar c = Calendar.getInstance();

    public void showDate(View view) {

        new DatePickerDialog(this, (datePicker, year, monthOfYear, dayOfMonth) -> {
            Toast.makeText(DialogActivity.this, year + "-" + (monthOfYear + 1) + "-" + dayOfMonth, Toast.LENGTH_SHORT).show();
        }, c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH)).show();
    }

    public void showTime(View view) {

        new TimePickerDialog(this, (timePicker, hourOfDay, minute) -> {
            Toast.makeText(DialogActivity.this, hourOfDay + ":" + minute, Toast.LENGTH_SHORT).show();
        }, c.get(Calendar.HOUR_OF_DAY), c.get(Calendar.MINUTE), true).show();
    }

} 

本文地址：https://blog.csdn.net/we1less/article/details/107734671