ボタンの1つを押すたびに、画面上の長方形の位置を変更したいと思います。または、SurfaceView全体を更新します。
アプリは実行されているように見えますが、長方形はカウンターで位置を変更しません。
どうもありがとうございます。
うさぎはxmlコードです:
<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" >
<SurfaceView
android:id="@+id/surface"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="@string/hello_world"
tools:context=".MainActivity" />
<Button
android:id="@+id/l"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="16dp"
android:text="L" />
<Button
android:id="@+id/r"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView1"
android:layout_alignParentTop="true"
android:layout_marginLeft="19dp"
android:text="R" />
</RelativeLayout>
これがJavaです:
package com.example.rectangle;
import android.app.Activity;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity {
DrawView drawView;
Paint paint = new Paint();
int w, h, edge, axis_w;
int counter;
Button add, sub;
TextView display;
@Override
public void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
counter = 0;
add = (Button) findViewById(R.id.r);
sub = (Button) findViewById(R.id.l);
display = (TextView) findViewById(R.id.textView1);
add.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
counter += 10;
display.setText("Total is" + counter);
}
});
sub.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
counter -= 10;
display.setText("Total is" + counter);
}
});
SurfaceView surface = (SurfaceView) findViewById(R.id.surface);
surface.getHolder().addCallback(new Callback() {
public void surfaceCreated(SurfaceHolder holder) {
Canvas canvas = holder.lockCanvas();
w = canvas.getWidth();
h = canvas.getHeight();
edge = 5;
axis_w = 3;
// canvas.drawRect(left, top, right, bottom, paint)
// Background
paint.setColor(Color.rgb(255, 255, 255));
canvas.drawRect(0, 0, w, h, paint);
// Canvas Background Color
paint.setColor(Color.rgb(0, 206, 209));
// Borders
canvas.drawRect(0, 0, w, edge, paint);
canvas.drawRect(0, h - edge, w, h, paint);
canvas.drawRect(0, 0, edge, h, paint);
canvas.drawRect(w - edge, 0, w, h, paint);
// Axis
canvas.drawRect(((w - axis_w) / 2) + counter, 0,
((w + axis_w) / 2) + counter, h, paint);
canvas.drawRect(0, (h - axis_w) / 2, w, (h + axis_w) / 2, paint);
holder.unlockCanvasAndPost(canvas);
}
public void surfaceDestroyed(SurfaceHolder holder) {
}
public void surfaceChanged(SurfaceHolder holder, int format,
int width, int height) {
}
});
}
}