相关疑难解决方法(0)

我正在尝试在对话框中创建一个edittext框来输入密码.当我在做的时候,我无法做到.我是初学者.请帮帮我.

public class MainActivity extends Activity {

Button create, show, setting;
//String pass="admin";String password;

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

    create = (Button)findViewById(R.id.amcreate);
    setting = (Button)findViewById(R.id.amsetting);
    show = (Button)findViewById(R.id.amshow);
    //input = (EditText)findViewById(R.id.this);

    setting.setVisibility(View.INVISIBLE);

    create.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            Intent myIntent1 = new Intent(view.getContext(), Create.class);
            startActivityForResult(myIntent1, 0);
        }

    });

    show.setOnClickListener(new View.OnClickListener() {
        //@SuppressWarnings("deprecation")
        public void onClick(final View view) {

            // Creating alert Dialog with one Button
            AlertDialog.Builder alertDialog = new AlertDialog.Builder(MainActivity.this);

            //AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create(); …

ConstraintLayout中的CardView没有包装高度.

面对稳定的CL库的类似问题:

compile 'com.android.support.constraint:constraint-layout:1.0.2'

Android Studio:2.3.2

观察:

1. 设置硬编码的cardview-height可以解决问题.
2. 使用RelativeLayout修复更改CardView.

是否还有issueCardview,它很难找到ConstraintLayout.

XML:

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:layout_editor_absoluteX="0dp"
    tools:layout_editor_absoluteY="25dp">


    <android.support.v7.widget.CardView
        android:id="@+id/cardView"
        android:layout_width="0dp"
        android:layout_height="122dp"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        app:cardBackgroundColor="@color/io15_blue_grey_100"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintHeight_default="wrap"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintWidth_default="spread">

        <android.support.constraint.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <ImageView
                android:id="@+id/mobLeftIcon"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginBottom="8dp"
                android:layout_marginLeft="16dp"
                android:layout_marginRight="16dp"
                android:layout_marginTop="8dp"
                app:layout_constraintBottom_toBottomOf="@+id/mobInputLayout"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toLeftOf="@+id/mobInputLayout"
                app:layout_constraintTop_toTopOf="@+id/mobInputLayout"
                app:srcCompat="@drawable/ic_up" />

            <android.support.design.widget.TextInputLayout
                android:id="@+id/mobInputLayout"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                app:layout_constraintLeft_toRightOf="@+id/mobLeftIcon"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toTopOf="parent">

                <EditText
                    android:id="@+id/editText4"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:hint="Mobile Number"
                    android:text="123123123" />
            </android.support.design.widget.TextInputLayout>

            <ImageView
                android:id="@+id/phoneLeftIcon"
                android:layout_width="wrap_content" …