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main.xml如下:

MainActivity如下:

import android.os.Bundle;import android.view.ViewTreeObserver;import android.view.ViewTreeObserver.OnGlobalLayoutListener;import android.widget.TextView;import android.app.Activity;public class MainActivity extends Activity {	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);		init();	}	private void init() {		final TextView mTextView = (TextView) findViewById(R.id.textView);		mTextView.setText("测试文本控件的属性" + "测试文本控件的属性" + "测试文本控件的属性" 		                 + "测试文本控件的属性"+ "测试文本控件的属性" + "测试文本控件的属性");		ViewTreeObserver viewTreeObserver = mTextView.getViewTreeObserver();		viewTreeObserver.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {					@Override					public void onGlobalLayout() {						ViewTreeObserver obs = mTextView.getViewTreeObserver();						obs.removeGlobalOnLayoutListener(this);						int lineCount = mTextView.getLineCount();						int lineVisibleEnd = mTextView.getLayout().getLineVisibleEnd(5);						String text = mTextView.getText().subSequence(0,lineVisibleEnd - 6)+ "...";						mTextView.setText(text);					}				});	}}

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