android - 允许用户在 android 应用程序中插入图像

Question

我的问题是：如何创建允许用户从手机上传图像并将其作为图片配置文件插入应用程序的 imageButton？例如whatsapp，它允许用户从手机中选择图像并将其设置为图片配置文件。

谢谢

Answer 1

以下是以下链接..

创建图像按钮

上传图片

示例 1

示例 2

示例 3

Answer 2

我的 XML 文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          android:orientation="vertical"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent">

<ImageView
    android:id="@android:id/icon"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:onClick="selectImage"
    />

我的档案

public class Test extends AppCompatActivity {
private static final int SELECT_PICTURE = 0;
private ImageView imageView;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_test);
    imageView = (ImageView) findViewById(android.R.id.icon);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == RESULT_OK) {
        Bitmap bitmap = getPath(data.getData());
        imageView.setImageBitmap(bitmap);
    }
}

private Bitmap getPath(Uri uri) {

    String[] projection = {MediaStore.Images.Media.DATA};
    Cursor cursor = managedQuery(uri, projection, null, null, null);
    int column_index = cursor
            .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    cursor.moveToFirst();
    String filePath = cursor.getString(column_index);
   // cursor.close();
    // Convert file path into bitmap image using below line.
    Bitmap bitmap = BitmapFactory.decodeFile(filePath);

    return bitmap;
}

private void selectImage() {

    Intent intent = new Intent();
    intent.setType("image/*");
    intent.setAction(Intent.ACTION_GET_CONTENT);
    startActivityForResult(Intent.createChooser(intent, "Select Picture"), SELECT_PICTURE);
}

}