我正在将布局动态添加到另一个包含imageView的布局中。我正在尝试将点击列表添加到该imageView中，以便用户可以从其设备将图像添加到该imageview中，但是它不起作用
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
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:context="com.example.myapplication.MainActivity">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#dddd"
android:id="@+id/parent_linear_layout">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/addlayouts"
android:text="addlayouts"/>
</LinearLayout>
</ScrollView>
</LinearLayout>
activity_asset2.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="5dp">
<ImageView
android:id="@+id/img1"
android:layout_width="150dp"
android:layout_height="150dp"
android:background="@android:color/holo_blue_light"
android:onClick="selectImage"
android:layout_margin="2dp"
/>
<EditText
android:id="@+id/textArea_information"
android:layout_width="match_parent"
android:layout_height="150dp"
android:gravity="top|left"
android:background="#ffffff"
android:inputType="textMultiLine"
android:overScrollMode="always"
android:scrollbarStyle="insideInset"
android:padding="5dp"
android:hint="Enter your text here"
android:textAppearance="?android:attr/textAppearanceMedium"
android:scrollHorizontally="false" />
</LinearLayout>
</LinearLayout>
MainActivity.java
Button bodybtn, btn2;
ArrayList<View> views = new ArrayList<View>();
public LinearLayout parentLinearLayout,parent_linear_layout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
parentLinearLayout = (LinearLayout) findViewById(R.id.parent_linear_layout);
bodybtn = (Button) findViewById(R.id.addlayouts);
bodybtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
popup();
}
});
}
public void popup(){
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("Asset Store");
builder.setItems(new CharSequence[]
{"left image with text","2 images"},
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// The 'which' argument contains the index position
// of the selected item
switch (which) {
case 0:
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View rowView = inflater.inflate(R.layout.activity_asset2, null);
// Add the new row before the add field button.
parentLinearLayout.addView(rowView,parentLinearLayout.getChildCount() - 1);
views.add(rowView);
break;
case 1:
LayoutInflater inflater1 = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View rowView1 = inflater1.inflate(R.layout.activity_asset3, null);
// Add the new row before the add field button.
parentLinearLayout.addView(rowView1, parentLinearLayout.getChildCount() - 1);
views.add(rowView1);
break;
}
}
});
builder.create().show();
}
}
asset2.java
public static final int SELECT_PICTURE = 0;
public ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_asset2);
imageView = (ImageView) findViewById(R.id.img1);
}
@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);
}
}
我希望当用户单击imageview时，他应该去设备图库并选择图像，然后将该图像显示在该imageview上。 但是当我单击imageview时，我的应用程序关闭了。我不知道出了什么问题。