Question

我想知道如何添加图像预览屏幕，就像快照聊天一样目前，我确实使用以下代码处理了拍照按钮。

我知道使用Timer创建Runnable，但是如何在应用拍照之前显示倒计时10秒？

布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity">

<ImageView
        android:id="@+id/imageView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginLeft="34dp"
        android:layout_marginTop="36dp"
        android:contentDescription="@string/hello_world"
        android:src="@drawable/ic_launcher" />

<TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_alignRight="@+id/imageView1"
        android:text="@string/tap"
        android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>

代码：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home_page);
    imgFavorite = (ImageView)findViewById(R.id.imageView1);
    imgFavorite.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            open();
        }
    });
}

public void open(){
    Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(intent, 0);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);
    Bitmap bp = (Bitmap) data.getExtras().get("data");
    imgFavorite.setImageBitmap(bp);
}

计时器和表面视图上的摄像头？

0 个答案: