我在调试我正在处理的Android应用程序时遇到了问题。在它的当前点，它应该能够从文本文件（它可以）获取输入，将其转换为包含表示网格部分的Cell对象的ArrayList（它确实），然后使用GridView渲染它们。
当我尝试在模拟器（来自Eclipse）上运行程序时，会出现最新的问题。该程序开始很好，它显示MainMenu罚款。当我点击玩游戏时，它会给我这个错误：
.gitattributes错误不包含对我的实际程序的任何引用，所以我不太确定错误是什么。我已经包含了一些我认为可能成为问题的文件，但我无法确定（我对此很新）。我在底部包含了一个指向我的完整仓库的链接，但错误是在其他地方。任何帮助将不胜感激，谢谢！
04-23 11:56:30.930: E/AndroidRuntime(948): FATAL EXCEPTION: main
04-23 11:56:30.930: E/AndroidRuntime(948): Process: edu.mbhs.cs.margonon, PID: 948
04-23 11:56:30.930: E/AndroidRuntime(948): java.lang.ClassCastException: android.view.ViewGroup$LayoutParams cannot be cast to android.widget.RelativeLayout$LayoutParams
04-23 11:56:30.930: E/AndroidRuntime(948): at android.widget.RelativeLayout$DependencyGraph.findRoots(RelativeLayout.java:1722)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.widget.RelativeLayout$DependencyGraph.getSortedViews(RelativeLayout.java:1667)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.widget.RelativeLayout.sortChildren(RelativeLayout.java:373)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:381)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.View.measure(View.java:16458)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.View.measure(View.java:16458)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
04-23 11:56:30.930: E/AndroidRuntime(948): at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:327)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.View.measure(View.java:16458)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
04-23 11:56:30.930: E/AndroidRuntime(948): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2289)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.View.measure(View.java:16458)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1914)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1111)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1293)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5582)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.Choreographer.doFrame(Choreographer.java:532)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.os.Handler.handleCallback(Handler.java:733)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.os.Handler.dispatchMessage(Handler.java:95)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.os.Looper.loop(Looper.java:137)
04-23 11:56:30.930: E/AndroidRuntime(948): at android.app.ActivityThread.main(ActivityThread.java:4998)
04-23 11:56:30.930: E/AndroidRuntime(948): at java.lang.reflect.Method.invokeNative(Native Method)
04-23 11:56:30.930: E/AndroidRuntime(948): at java.lang.reflect.Method.invoke(Method.java:515)
04-23 11:56:30.930: E/AndroidRuntime(948): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
04-23 11:56:30.930: E/AndroidRuntime(948): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
04-23 11:56:30.930: E/AndroidRuntime(948): at dalvik.system.NativeStart.main(Native Method)
package edu.mbhs.cs.margonon;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
public class GameScreen extends Activity {
private int[][] gridSolution;
private int rows;
private int cols;
private List<Integer> solList = new ArrayList<Integer>();
private List<Cell> cellList = new ArrayList<Cell>();
private List<Boolean> solListBool = new ArrayList<Boolean>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game_screen);
createCellList();
final GridView gameGrid = (GridView) findViewById(R.id.gameGridView);
gameGrid.setLayoutParams(new LayoutParams(rows, cols));
gameGrid.setAdapter(new gameGridAdapter(this, cellList, rows, cols));
gameGrid.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long id){
cellList.get(position).cycleNext();
gameGrid.invalidate();
}
});
}
/**
* This function takes the data from the raw resource grids.txt and puts it in a 2D array.
* Currently it can only accept one grid.
* TODO Make this function work for multiple puzzles (grids) in the file.
* @return A 2D-array containing the solution for the grid.
*
public int[][] readGrids() {
int[][] gs;
InputStream is = getResources().openRawResource(R.raw.grids);
try {
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String line = br.readLine();
String[] lineStrings;
int[] lineInts;
/* This do-while statement is a work around so that we can define the first two values without
* defining lineStrings and lineInts outside of a loop.
*
*
do {
lineStrings = line.split("\\s");
lineInts = new int[lineStrings.length];
//TODO Make sure there are only two numbers.
for(int i = 0; i < lineStrings.length; i++){
try{
lineInts[i] = Integer.parseInt(lineStrings[i]);
} catch(NumberFormatException e){
lineInts[i] = 1;
} // end try-catch
} // end for
cols = lineInts[0];
rows = lineInts[1];
} while(false);
gs = new int[rows][cols];
*
/* This section of code is intended to read each line and plop it into the array.
*
line = br.readLine();
//TODO Add in default values if no grid is found. (And line is therefore null)
lineStrings = line.split("\\s");
//lineInts = new int[lineStrings.length];
for(int i = 0; i < lineStrings.length; i++) {
//TODO Handle what happens if the grid is bigger than what was originally specified.
try {
gs[on][i] = Integer.parseInt(lineStrings[i]);
Log.d("PARSING", (on + ", " + i + " = " + gs[on][i]));
if(gs[on][i] == 0)
cellList.add(new Cell(on, i, false));
else
cellList.add(new Cell(on, i, true));
} catch(NumberFormatException e) {
//TODO Add something to respond to the exception.
} // end try-catch
} // end for
br.readLine();
on++;
} // end while
} catch (IOException e) {
gs = new int[1][1];
gs[0][0] = 1;
e.printStackTrace();
} // end try-catch
return gs;
} // end public int[][] readGrids
*/
public void createCellList()
{
List<Cell> cl;
InputStream is = getResources().openRawResource(R.raw.grids);
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String[] lineStrings;
int[] lineInts;
String puzzleText = "";
try {
puzzleText = br.readLine();
lineStrings = puzzleText.split("\\s");
lineInts = new int[lineStrings.length - 2];
System.out.println(puzzleText);
System.out.println(lineStrings.length);
for(int i = 0; i < lineStrings.length; i++)
{
if(i == 0) {
cols = Integer.parseInt(lineStrings[i]);
continue;
} else if(i == 1) {
rows = Integer.parseInt(lineStrings[i]);
continue;
} else {
lineInts[i-2] = Integer.parseInt(lineStrings[i]);
System.out.println(i + " " + lineInts[i-2]);
solList.add(lineInts[i-2]);
if(solList.get(i-2) == 1)
solListBool.add(true);
else
solListBool.add(false);
}
}
gridSolution = new int[rows][cols];
for(int i = 0; i < lineInts.length; i++)
{
int y = i/cols;
int x = i - y * cols;
System.out.println("i=" + i + ", x=" + x + ", y=" + y);
gridSolution[y][x] = lineInts[i];
cellList.add(new Cell(x, y, solListBool.get(i)));
}
} catch (IOException e) {e.printStackTrace();}
}
}
package edu.mbhs.cs.margonon;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
/**
* This is the adapter that draws the grid.
*
* @author Robert Rose
*/
public class gameGridAdapter extends BaseAdapter {
private LayoutInflater mInflater; // The inflater.
private List<Cell> cells = new ArrayList<Cell>(); // A list containing all the cell objects.
private int rows; // The number of rows.
private int cols; // The number of columns.
/**
* This is the constructor which takes the context, a list of cell objects and
* the grid dimensions to create an adapter which will render the grid.
*
* @param context Context passed in from another class.
* @param cellsIn
* @param r
* @param c
*/
public gameGridAdapter(Context context, List<Cell> cellsIn, int r, int c) {
mInflater = LayoutInflater.from(context);
for(int i = 0; i < rows; i++)
for(int k = 0; k < cols; k++)
cells.add(cellsIn.get(i*(cols - 1) + k));
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return cells.size();
}
@Override
public Object getItem(int position) {
return cells.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view;
if(convertView == null) {
view = mInflater.inflate(R.layout.button_grid_view, parent, false);
ImageView imgView = (ImageView) view.findViewById(R.id.imageInGrid);
imgView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imgView.setPadding(4, 4, 4, 4);
switch(cells.get(position).getDisplay())
{
case 0:
imgView.setImageResource(R.drawable.white);
break;
case 1:
imgView.setImageResource(R.drawable.colored);
break;
case 2:
imgView.setImageResource(R.drawable.cross);
break;
default:
Log.d("DRAWING", "display was set to invalid state");
} // end switch;
} else {
view = convertView;
} // end if
return view;
}
//TODO http://ocddevelopers.com/2014/extend-baseadapter-instead-of-arrayadapter-for-custom-list-items/
//TODO http://stackoverflow.com/questions/5046320/a-grid-layout-of-icon-text-buttons
}
package edu.mbhs.cs.margonon;
import android.widget.ImageView;
/**
* This is the cell object for the nonogram program. Each cell has its on cell
* object that holds what the current status of the cell is.
*
* @author Robert Rose
*/
public class Cell {
private final boolean willBeFull; // Whether the cell will be full (true) or not (false)
private int display = 0; // 0 = empty, 1 = filled, 2 = crossed out
private boolean correctNow; // Whether the cell is currently in its correct state.
private int rowIndex = -1; // The row on which this cell is located.
private int columnIndex = -1; // The column on which this cell is located.
private ImageView iv;
/**
* This is the primary constructor that takes a row index and a column index and
* creates a cell with the value based on a boolean value.
*
* @param ri Row on which the cell lies.
* @param ci Column on which the cell lies.
* @param willBe Whether cell will be full or whether it is empty true =
* full, false = empty.
*/
public Cell(int ri, int ci, boolean willBe) {
rowIndex = ri;
columnIndex = ci;
willBeFull = willBe;
display = 0;
correctNow = isCorrect();
} // end public Cell(int ri, int ci, boolean willBe)
/**
* This is an identical constructor to the one above, but can take an int instead
* of a boolean value.
*
* @param ri Row on which the cell lies.
* @param ci Column on which the cell lies.
* @param willBe Whether cell will be full or whether it is empty. 1 = full
* (true), 0 = empty (false).
*
*/
public Cell(int ri, int ci, int willBe) {
boolean b;
if(willBe == 1)
b = true;
else
b = false;
rowIndex = ri;
columnIndex = ci;
willBeFull = b;
display = 0;
correctNow = isCorrect();
}
/**
* Called to determine whether the current status of the cell is correct.
* @return T/F. Whether the current status of the cell is correct.
*/
public boolean isCorrect()
{
switch(display)
{
case 0:
if(willBeFull)
return false;
else
return true;
case 1:
if(willBeFull)
return true;
else
return false;
case 2:
if(willBeFull)
return false;
else
return true;
default:
return false;
} // end switch
} // end public boolean isCorrect()
public void cycleNext()
{
if(display == 2)
display = 0;
else
display++;
}
/**
* Getter function for the willBeFull variable.
* @return T/F. Whether the cell should be filled or empty
*/
public boolean getWillBeFull()
{
return willBeFull;
} // end boolean getWillBeFull()
/**
* Getter function for the display variable.
* @return 0 if cell is empty, 1 if cell is full, 2 if cell is crossed out
*/
public int getDisplay()
{
return display;
} // end public int getDisplay()
/**
* Getter function for the correctNow variable. Somewhat obsolete considering
* the isCorrect() function exists, but I want it here, so I'm going to keep it here.
* @return T/F. Whether the cell in its current state is correct.
*/
public boolean getCorrectNow()
{
return correctNow;
} // end public boolean getCorrectNow()
/**
* Getter function for the rowIndex, indicating which row the cell resides on the nonogram.
* @return int. Index of row of the nonogram the cell resides on.
*/
public int getRowIndex()
{
return rowIndex;
} // end public int getRowIndex()
/**
* Getter for the columnIndex, indicating which column the cell resides on the nongram.
* @return int. Index of coulmn of the nonogram the cell resides on.
*/
public int getColumnIndex()
{
return columnIndex;
} // end public int getColumnIndex()
}
<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=".GameScreen" >
<GridView
android:id="@+id/gameGridView"
android:layout_width="324dp"
android:layout_height="324dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:columnWidth="48dp"
android:gravity="center"
android:horizontalSpacing="10dp"
android:numColumns="6"
android:padding="3dp"
android:stretchMode="columnWidth"
android:verticalSpacing="0dp" >
</GridView>
</RelativeLayout>
答案 0 :(得分：1)
在您的代码中，您要导入android.view.ViewGroup.LayoutParams而不是android.widget.RelativeLayout.LayoutParams
尝试从此更改
import android.view.ViewGroup.LayoutParams;
到这个
import android.widget.RelativeLayout.LayoutParams;