无法在Android中增加addView [英] Could not add addView in android
本文介绍了无法在Android中增加addView的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我需要帮助的朋友。
下面是我的活动
public class MainActivity extends Activity {
float values[] = { 700, 400, 100, 500, 600 };
float values1[] = { 70, 40, 10, 50 };
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LinearLayout lv1 = (LinearLayout) findViewById(R.id.linear);
values = calculateData(values);
values1 = calculateData(values1);
MyGraphview graphview = new MyGraphview(this, values);
graphview.setLayoutParams(new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
lv1.addView(graphview, 0);
MyGraphview1 graphview1 = new MyGraphview1(this, values1);
graphview1.setLayoutParams(new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
lv1.addView(graphview1, 0);
}
private float[] calculateData(float[] data) {
float total = 0;
for (int i = 0; i < data.length; i++) {
total += data[i];
}
for (int i = 0; i < data.length; i++) {
data[i] = 360 * (data[i] / total);
}
return data;
}
public class MyGraphview extends View {
private Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
private float[] value_degree;
RectF rectf = new RectF(150, 150, 350, 350);
float temp = 0;
public MyGraphview(Context context, float[] values) {
super(context);
value_degree = new float[values.length];
for (int i = 0; i < values.length; i++) {
value_degree[i] = values[i];
}
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
Random r;
for (int i = 0; i < value_degree.length; i++) {
if (i == 0) {
r = new Random();
int color = Color.argb(100, r.nextInt(256), r.nextInt(256),
r.nextInt(256));
paint.setColor(color);
canvas.drawArc(rectf, 0, value_degree[i], true, paint);
} else {
temp += value_degree[i - 1];
r = new Random();
int color = Color.argb(255, r.nextInt(256), r.nextInt(256),
r.nextInt(256));
paint.setColor(color);
canvas.drawArc(rectf, temp, value_degree[i], true, paint);
}
}
}
}
public class MyGraphview1 extends View {
private Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
private float[] value_degree;
RectF rectf = new RectF(170, 370, 330, 530);
float temp = 0;
public MyGraphview1(Context context, float[] values) {
super(context);
value_degree = new float[values.length];
for (int i = 0; i < values.length; i++) {
value_degree[i] = values[i];
}
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
Random r;
for (int i = 0; i < value_degree.length; i++) {
if (i == 0) {
r = new Random();
int color = Color.argb(100, r.nextInt(256), r.nextInt(256),
r.nextInt(256));
paint.setColor(color);
canvas.drawArc(rectf, 0, value_degree[i], true, paint);
} else {
temp += value_degree[i - 1];
r = new Random();
int color = Color.argb(255, r.nextInt(256), r.nextInt(256),
r.nextInt(256));
paint.setColor(color);
canvas.drawArc(rectf, temp, value_degree[i], true, paint);
}
}
}
}
}
这是我的XML
And this is my xml
<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" >
<LinearLayout
android:id="@+id/linear"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
</LinearLayout>
</RelativeLayout>
这是我的结果。
但是，预期的结果是
什么是错误的，我code的朋友。请帮帮我。先谢谢了。
What is wrong in my code friends. please help me. Thanks in advance.
如果我删除PARAMS所以这将是
if I remove the params so it would be
addView（视图）;
并删除索引
addView(view); and remove Index
MyGraphview graphview = new MyGraphview(this, values);
// graphview.setLayoutParams(new LinearLayout.LayoutParams(
// LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
lv1.addView(graphview);
MyGraphview1 graphview1 = new MyGraphview1(this, values1);
// graphview1.setLayoutParams(new LinearLayout.LayoutParams(
// LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
lv1.addView(graphview1);
然后我的输出是：
Then my output is:
推荐答案
感谢很多谁所有试图解决我的问题啦。我已经找到解决方案，具有以下修改。我认为答案将有助于人谁对这个问题的朋友寻找解决方案。因为现在我觉得从我们的老板在最后一分钟presser。
Thanks lot who all are trying to solve my problem friends. I have found solution with following modifications. I think the answer will be helpful to someone who searching solution for this problem friends. Because now I feel the last minute presser from our boss.
首先我的XML变化每@Karan建议。
First my xml changes as per @Karan suggestions.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/linear"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
</LinearLayout>
<LinearLayout
android:id="@+id/linear1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
</LinearLayout>
</LinearLayout>
然后我在这两个MyGraphview和MyGraphview1类覆盖 onMeasure 方法folling设置高度@Merlins建议。
then I override onMeasure method in both MyGraphview and MyGraphview1 classes as folling to set height as @Merlins suggestions.
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
this.setMeasuredDimension(width, height);
}
宽度和高度
Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
height /= 2;
然后的onCreate 改变方法
LinearLayout lv1 = (LinearLayout) findViewById(R.id.linear);
LinearLayout lv2 = (LinearLayout) findViewById(R.id.linear1);
values = calculateData(values);
values1 = calculateData(values1);
MyGraphview graphview = new MyGraphview(this, values);
MyGraphview1 graphview1 = new MyGraphview1(this, values1);
lv1.addView(graphview);
lv2.addView(graphview1);
这篇关于无法在Android中增加addView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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