2
我使用此代码获取我的屏幕宽度和高度，并将我的按钮发送到屏幕上的任意位置，但有时我的按钮完全不在屏幕上。我不相信我的代码得到的解决方案是真正的解决方案。在Android中获取屏幕宽度和高度
DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
float height = displayMetrics.heightPixels;
float width = displayMetrics.widthPixels;
float maxX = width;
float maxY = height;
float minX = width/10;
float minY = height/15;
Random rand = new Random();
float finalX = rand.nextFloat() * abs(maxX - minX);
float finalY = rand.nextFloat() * abs(maxY - minY);
_height.setText("Current Y: " + String.valueOf(finalY));
_width.setText("Current X: " + String.valueOf(finalX));
max_height.setText("Max height: " + String.valueOf(height));
max_width.setText("Max width: " + String.valueOf(width));
btnClick.setX(finalX);
btnClick.setY(finalY);
btnClick.setVisibility(View.VISIBLE);
这里是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:id="@+id/cLayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/background"
app:layout_constraintRight_toRightOf="@+id/width"
tools:context="com.jamblatech.clicker.MainActivity"
tools:layout_editor_absoluteY="81dp">
<Button
android:id="@+id/buttonEnd"
android:layout_width="363dp"
android:layout_height="572dp"
android:background="@android:color/transparent"
android:onClick=""
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0" />
<TextView
android:id="@+id/textViewCount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/zero"
android:textColor="@color/colorAccent"
android:textSize="36sp"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.03" />
<TextView
android:id="@+id/timerView"
android:layout_width="185dp"
android:layout_height="41dp"
android:text="@string/zero"
android:textAlignment="center"
android:textSize="24sp"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.502"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.937" />
<Button
android:id="@+id/buttonClick"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginTop="200dp"
android:background="@drawable/clickbutton"
android:text="@string/Click"
android:textSize="24sp"
android:visibility="invisible"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textViewCount" />
<Button
android:id="@+id/buttonReplay"
android:layout_width="221dp"
android:layout_height="103dp"
android:text="@string/Replay"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.503"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/buttonBack"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/Back"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.674" />
<TextView
android:id="@+id/highScore"
android:layout_width="261dp"
android:layout_height="107dp"
android:textAlignment="center"
android:textColor="@android:color/holo_purple"
android:textSize="30sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.149" />
<TextView
android:id="@+id/height"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/Test"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.029" />
<TextView
android:id="@+id/width"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/Test"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="@+id/maxheight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/Test"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.06" />
<TextView
android:id="@+id/maxwidth"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/Test"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.09" />
<TextView
android:id="@+id/testTExt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/Test"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="@+id/startTimerText"
android:layout_width="134dp"
android:layout_height="95dp"
android:text="@string/Test_number"
android:textAlignment="center"
android:textColor="@android:color/holo_green_dark"
android:textSize="60sp"
android:visibility="visible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.54" />
</android.support.constraint.ConstraintLayout>
这里有两张照片显示我的问题：
- 按钮略微屏幕上：
- 按钮完全关闭屏幕：
你能分享你的xml文件吗？ – Ashwani
我添加了XML :) –
尝试用RelativeLayout替换ConstraintLayout –