Question

我是android新手。我在图像视图底部有一个带摄像头按钮的图像视图。无论何时单击按钮，摄像机都应打开并捕获图像。此捕获的图像应保存在内存中，imageview现在必须显示此捕获的图像。单击摄像机按钮时，必须保存新图像，并且imageview必须显示此图像。

如何设置这种类型的布局，并将相机按钮放置在图像视图的底部？

Answer 1

Well You can use this layout..

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    android:orientation="vertical"
    tools:ignore="MissingPrefix">


    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="250dp"
        android:fitsSystemWindows="true"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            android:src="@drawable/bicycle" />

    </android.support.design.widget.AppBarLayout>


    <android.support.design.widget.FloatingActionButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginRight="@dimen/margin_5dp"
        android:clickable="true"
        app:fabSize="mini"
        android:src="@android:drawable/ic_menu_camera"
        app:layout_anchor="@id/appbar"
        app:layout_anchorGravity="bottom|right|end" />

</android.support.design.widget.CoordinatorLayout>

Hope it'll help

Answer 2

您可以使用Intent从图库或相机中选择图像

 button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(intent, KEY);
            \\KEY is final String with any value
        }
    });
}


protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == 7 && resultCode == RESULT_OK) {
        Bitmap bitmap = (Bitmap) data.getExtras().get("data");
        imageView.setImageBitmap(bitmap);
    }
}

检查以下示例 http://www.android-examples.com/capture-image-from-camera-and-display-in-imageview-android/

ImageView带底部的相机按钮

2 个答案: