我已經插入一個佈局XML中稱爲「disegno」自定義視圖中樹立了「的TextView」的文本:它可以從一個類的擴展視圖「
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="?windowsBackground">
<it.package.myapp.Disegno
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/finestraDisegno"
android:isScrollContainer="true" />
<FrameLayout
android:layout_height="0dp"
android:layout_width="0dp"
...
<EditText
...
android:id="@+id/et_MOD_x">
</EditText>
然後我有實現擴展視圖類填充自定義佈局:
package it.package.myapp;
import android.content.Context;
...
public class Disegno extends View {
public Disegno(Context context) {
this(context, null, 0); }
public Disegno(Context context, AttributeSet attrs) {
this(context, attrs, 0);
setContentView(R.layout.main); }
public Disegno(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mScaleDetector = new ScaleGestureDetector(context, new ScaleListener());
init(attrs); }
...
@Override
protected void onDraw(Canvas canvas) {
paint.setStyle(Paint.Style.FILL);
paint.setAntiAlias(true);
canvas.translate(mPosX, mPosY);
canvas.scale(mScaleFactor, mScaleFactor);
// chiamo routine assi cartesiani
AssiCartesiani(canvas);
// chiamo routine polilinea
Polilinea(canvas); }
...
現在我想設置TextView的「et_MOD_x」通過的文本「findViewById(R.Id.et_MOD_x)」改變這樣的代碼:
@Override
protected void onDraw(Canvas canvas) {
paint.setStyle(Paint.Style.FILL);
paint.setAntiAlias(true);
canvas.translate(mPosX, mPosY);
canvas.scale(mScaleFactor, mScaleFactor);
// chiamo routine assi cartesiani
AssiCartesiani(canvas);
// chiamo routine polilinea
Polilinea(canvas);
EditText et_MOD_x = (EditText) findViewById(R.Id.et_MOD_x)
et_MOD_x.setText("abcd");
}
但沒有「setContentView(...)」是不可能的! 總結:我將從「extends View」類中設置「EditText」的文本。我想指向一個外部佈局...... mmmhh! 有什麼辦法可以做到這一點?