很久以前做的表情輸入及顯示，用的系統的SpannableString，完成后的代碼在其他版本的Android手機上沒有問題，但是在在4.1和4.1.1的手機上顯示時，有概率出現程序崩潰的問題。

下面是此問題摘出的異常信息：

9-17 16:38:27.429: E/AndroidRuntime(10425): FATAL EXCEPTION: main 09-17 16:38:27.429: E/AndroidRuntime(10425): java.lang.ArrayIndexOutOfBoundsException: length=116; index=125 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.text.MeasuredText.addStyleRun(MeasuredText.java:168) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.text.MeasuredText.addStyleRun(MeasuredText.java:204) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.text.StaticLayout.generate(StaticLayout.java:297) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.text.StaticLayout.<init>(StaticLayout.java:156) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.text.StaticLayout.<init>(StaticLayout.java:96) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.text.StaticLayout.<init>(StaticLayout.java:75) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.TextView.makeSingleLayout(TextView.java:5942) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.TextView.makeNewLayout(TextView.java:5782) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.TextView.onMeasure(TextView.java:6139) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.measure(View.java:15264) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4918) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.measureVertical(LinearLayout.java:681) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.onMeasure(LinearLayout.java:574) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.measure(View.java:15264) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4918) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.measure(View.java:15264) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.ListView.setupChild(ListView.java:1893) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.ListView.makeAndAddView(ListView.java:1803) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.ListView.fillDown(ListView.java:681) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.ListView.fillFromTop(ListView.java:742) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.ListView.layoutChildren(ListView.java:1629) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.AbsListView.onLayout(AbsListView.java:2224) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.layout(View.java:13846) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.layout(ViewGroup.java:4466) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1649) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1507) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.onLayout(LinearLayout.java:1420) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.layout(View.java:13846) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.layout(ViewGroup.java:4466) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1649) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1507) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.onLayout(LinearLayout.java:1420) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.layout(View.java:13846) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.layout(ViewGroup.java:4466) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.layout(View.java:13846) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.layout(ViewGroup.java:4466) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1649) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1507) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.onLayout(LinearLayout.java:1420) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.layout(View.java:13846) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.layout(ViewGroup.java:4466) 09-17 16:38:27.429: E/AndroidRuntime(10425): at com.component.SinglePreviewContainer.onLayout(SinglePreviewContainer.java:124) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.layout(View.java:13846) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.layout(ViewGroup.java:4466) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1649) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1507) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.onLayout(LinearLayout.java:1420) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.layout(View.java:13846) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.layout(ViewGroup.java:4466) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1649) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1638) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.onLayout(LinearLayout.java:1422) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.layout(View.java:13846) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.layout(ViewGroup.java:4466) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.RelativeLayout.onLayout(RelativeLayout.java:948) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.layout(View.java:13846) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.layout(ViewGroup.java:4466) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.View.layout(View.java:13846) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.view.ViewGroup.layout(ViewGroup.java:4466) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1649) 09-17 16:38:27.429: E/AndroidRuntime(10425): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1507)

? 原因：當TextView顯示的表情恰好要被換行符截斷的時候，會報異常（目前只在4.1和4.1.1上出現）

?

?解決方式：

重寫TextView 在onMeasure()中捕獲異常

public class PatchedTextView extends TextView { public PatchedTextView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public PatchedTextView(Context context, AttributeSet attrs) { super(context, attrs); } public PatchedTextView(Context context) { super(context); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { try{ super.onMeasure(widthMeasureSpec, heightMeasureSpec); }catch (ArrayIndexOutOfBoundsException e){ setText(getText().toString()); super.onMeasure(widthMeasureSpec, heightMeasureSpec); } } @Override public void setGravity(int gravity){ try{ super.setGravity(gravity); }catch (ArrayIndexOutOfBoundsException e){ setText(getText().toString()); super.setGravity(gravity); } } @Override public void setText(CharSequence text, BufferType type) { try{ super.setText(text, type); }catch (ArrayIndexOutOfBoundsException e){ setText(text.toString()); } } }

崩潰的特征：

當Android正在渲染一個非常長的一行內容到屏幕的時候，它需要去指出在哪里劃線。但是如果下面的一些情況都滿足了，就會出現一次崩潰：

1. 文本內容包括了MetricAffectingSpans (另：StyleSpan是它的一個子類).其他類型的Spans不會產生這個崩潰。

2.在一個此詞的中間存在MetricAffectingSpans的內容開始或者結尾的詞(例如：一個詞的前一半是加粗，但是后一半不是加粗的)

3. 需要在一個word的非跨越的部分自動換行

4.代碼運行在Android 4.1的手機上面。

轉載于:https://www.cnblogs.com/renhui/p/5865782.html

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