塗りつぶし円に文字を表示するためのカスタム ビューを作成しました。たとえば、円は緑で塗りつぶされ、その上の文字は赤です。
今、いくつかのカスタム ビューを GridView に描画したいと考えています。たとえば、GridView が 5x5 の場合、画面には 25 個のカスタム ビューが表示されます (それぞれのカスタム ビューには異なる文字が表示されている可能性があります)。
誰もこれを知っていますか？ご協力ありがとうございました
編集＃1：これは私のカスタムビューです
package com.hoangtrinh.paintmycustomview;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.util.AttributeSet;
import android.view.View;
public class LetterView extends View {
private int letterBackgroundColor, letterColor;
private String letterText;
private Paint myLetterPaint;
public int getLetterBackgroundColor() {
return letterBackgroundColor;
}
public void setLetterBackgroundColor(int letterBackgroundColor) {
this.letterBackgroundColor = letterBackgroundColor;
invalidate();
requestLayout();
}
public int getLetterColor() {
return letterColor;
}
public void setLetterColor(int letterColor) {
this.letterColor = letterColor;
invalidate();
requestLayout();
}
public String getLetterText() {
return letterText;
}
public void setLetterText(String letterText) {
this.letterText = letterText;
invalidate();
requestLayout();
}
public LetterView(Context context) {
super(context);
AttributeSet attrs = null;
myLetterPaint = new Paint();
TypedArray a = context.getTheme().obtainStyledAttributes(attrs,
R.styleable.LetterView, 0, 0);
try {
letterBackgroundColor = a.getInteger(
R.styleable.LetterView_letterBackgroundColor, 0);
letterColor = a.getInteger(R.styleable.LetterView_letterColor, 0);
letterText = a.getString(R.styleable.LetterView_letterText);
} finally {
a.recycle();
}
}
public LetterView(Context context, AttributeSet attrs) {
super(context);
myLetterPaint = new Paint();
TypedArray a = context.getTheme().obtainStyledAttributes(attrs,
R.styleable.LetterView, 0, 0);
try {
letterBackgroundColor = a.getInteger(
R.styleable.LetterView_letterBackgroundColor, 0);
letterColor = a.getInteger(R.styleable.LetterView_letterColor, 0);
letterText = a.getString(R.styleable.LetterView_letterText);
} finally {
a.recycle();
}
}
@Override
protected void onDraw(Canvas canvas) {
int viewWidthHalf = this.getMeasuredWidth() / 2;
int viewHeightHalf = this.getMeasuredHeight() / 2;
int radius = 0;
if(viewWidthHalf>viewHeightHalf)
radius=viewHeightHalf-10;
else
radius=viewWidthHalf-10;
myLetterPaint.setAntiAlias(true);
myLetterPaint.setStyle(Style.FILL);
myLetterPaint.setColor(letterBackgroundColor);
canvas.drawCircle(viewWidthHalf, viewHeightHalf, radius, myLetterPaint);
myLetterPaint.setColor(letterColor);
myLetterPaint.setTextAlign(Paint.Align.CENTER);
myLetterPaint.setTextSize(50);
canvas.drawText(letterText, viewWidthHalf, viewHeightHalf, myLetterPaint);
}
}
これは私のカスタムビューアダプターです
package com.hoangtrinh.paintmycustomview;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
public class LetterViewAdapter extends BaseAdapter {
private List<LetterView> customViews = new ArrayList<LetterView>();
private Context context;
public LetterViewAdapter(List<LetterView> customViews, Context context) {
this.customViews = customViews;
this.context = context;
}
@Override
public int getCount() {
return customViews.size();
}
@Override
public Object getItem(int position) {
return customViews.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
// You can construct your view here.
LetterView letterView = new LetterView(context);
LinearLayout layout = new LinearLayout(context);
layout.addView(letterView);
return layout;
// or return your custom views array element
// return customViews.get(position);
} else {
return convertView;
}
}
}
これは MainActivity です
package com.hoangtrinh.paintmycustomview;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.widget.GridView;
public class MainActivity extends Activity {
GridView myGridView;
static final String[] LETTER_CASE = new String[] {
"A", "B","C", "D" };
List<LetterView> customViews = new ArrayList<LetterView>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myGridView = (GridView) findViewById(R.id.gridView1);
myGridView.setAdapter(new LetterViewAdapter(customViews, this));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
これは私のカスタム ビュー (letter.xml) です。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res/com.hoangtrinh.paintmycustomview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<com.hoangtrinh.paintmycustomview.LetterView
android:id="@+id/lv1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
custom:letterBackgroundColor="#00FFFF"
custom:letterColor="#FF0000"
custom:letterText="H" />
</LinearLayout>
そして最後に、これは私の activity_main.xml です
<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/gridView1"
android:numColumns="auto_fit"
android:gravity="center"
android:columnWidth="40dp"
android:stretchMode="columnWidth"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</GridView>